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This article contains a list of notable
mnemonic A mnemonic ( ) device, or memory device, is any learning technique that aids information retention or retrieval (remembering) in the human memory for better understanding. Mnemonics make use of elaborative encoding, retrieval cues, and imag ...
s used to remember various objects, lists, etc.


Astronomy

*Order of planets from the Sun: (
Mercury Mercury commonly refers to: * Mercury (planet), the nearest planet to the Sun * Mercury (element), a metallic chemical element with the symbol Hg * Mercury (mythology), a Roman god Mercury or The Mercury may also refer to: Companies * Merc ...
,
Venus Venus is the second planet from the Sun. It is sometimes called Earth's "sister" or "twin" planet as it is almost as large and has a similar composition. As an interior planet to Earth, Venus (like Mercury) appears in Earth's sky never fa ...
,
Earth Earth is the third planet from the Sun and the only astronomical object known to harbor life. While large volumes of water can be found throughout the Solar System, only Earth sustains liquid surface water. About 71% of Earth's surfa ...
,
Mars Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System, only being larger than Mercury (planet), Mercury. In the English language, Mars is named for the Mars (mythology), Roman god of war. Mars is a terr ...
,
Jupiter Jupiter is the fifth planet from the Sun and the List of Solar System objects by size, largest in the Solar System. It is a gas giant with a mass more than two and a half times that of all the other planets in the Solar System combined, but ...
,
Saturn Saturn is the sixth planet from the Sun and the second-largest in the Solar System, after Jupiter. It is a gas giant with an average radius of about nine and a half times that of Earth. It has only one-eighth the average density of Earth; h ...
,
Uranus Uranus is the seventh planet from the Sun. Its name is a reference to the Greek god of the sky, Uranus (mythology), Uranus (Caelus), who, according to Greek mythology, was the great-grandfather of Ares (Mars (mythology), Mars), grandfather ...
,
Neptune Neptune is the eighth planet from the Sun and the farthest known planet in the Solar System. It is the fourth-largest planet in the Solar System by diameter, the third-most-massive planet, and the densest giant planet. It is 17 times ...
,
Pluto Pluto (minor-planet designation: 134340 Pluto) is a dwarf planet in the Kuiper belt, a ring of trans-Neptunian object, bodies beyond the orbit of Neptune. It is the ninth-largest and tenth-most-massive known object to directly orbit the S ...
) :obsolete (per the
IAU definition of planet The International Astronomical Union (IAU) defined in August 2006 that, in the Solar System, a ''planet'' is a celestial body that: # is in orbit around the Sun, # has sufficient mass to assume hydrostatic equilibrium (a nearly round shape), an ...
): ::Most Vegetables Eat More Juice So Usually Never Pee ::My Very Educated Mother Just Served Us Nine Potatoes ::Many Vicious Elephants Met Just Slightly Under New Pineapples ::My Very Easy Method Just Speeds Up Naming Planets ::Mark's Very Extravagant Mother Just Sent Us Ninety Parakeets *
Stellar classification In astronomy, stellar classification is the classification of stars based on their stellar spectrum, spectral characteristics. Electromagnetic radiation from the star is analyzed by splitting it with a Prism (optics), prism or diffraction grati ...
sequence: O B A F G K M R N S ::Oh Be A Fine Girl/Guy, Kiss Me Right Now, Sweetheart! *Revised stellar classification sequence: O B A F G K M L T Y ::Old, Bald, And Fat Generals Kiss More Ladies Than You *Signs of the
zodiac The zodiac is a belt-shaped region of the sky that extends approximately 8° north or south (as measured in celestial latitude) of the ecliptic, the Sun path, apparent path of the Sun across the celestial sphere over the course of the year. ...
: : *Average distances of the outer planets from the Sun in
astronomical unit The astronomical unit (symbol: au, or or AU) is a unit of length, roughly the distance from Earth to the Sun and approximately equal to or 8.3 light-minutes. The actual distance from Earth to the Sun varies by about 3% as Earth orbits t ...
s approximate nice round numbers: ::Jupiter: 5 AU,  Saturn: 10 AU,  Uranus: 20 AU,  Neptune: 30 AU,  Pluto: 40 AU


Biology

*To remember the order of
taxa In biology, a taxon (back-formation from ''taxonomy''; plural taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular nam ...
in biology (Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species, ''Variety: **"Dear King Philip Came Over For Good Soup" is often cited as a non-vulgar method for teaching students to memorize the taxonomic classification of system. Other variations tend to start with the mythical king, with one author noting "The nonsense about King Philip, or some ribald version of it, has been memorized by generations of biology students". **Dear King Philip Claps Often For Good Science **Do Kings Play Chess On Fine Green Silk? **Dumb Kids Prefer Cheese Over Fried Greasy Spinach **Do Kindly Place Cover On Fresh Green Spring Vegetables **Darn Kernel Panics Crash Our Family Game System **Do Keep Pond Clean Or Frog Gets Sick **Dumb Kids Play Catch Over Father's Grave Stone **Daniel Keeps Philip Cat On Friday Getting Salsa * To remember the processes that define living things: ** MRS GREN: Movement; Respiration; Sensation; Growth; Reproduction; Excretion; Nutrition * To remember the number of humps on types of camels: ** D in ''
Dromedary The dromedary (''Camelus dromedarius'' or ;), also known as the dromedary camel, Arabian camel, or one-humped camel, is a large even-toed ungulate, of the genus ''Camelus'', with one hump on its back. It is the tallest of the three species of ...
'' has one hump; B in '' Bactrian'' has two * To distinguish color patterns between the harmless
kingsnake Kingsnakes are colubrid New World members of the genus ''Lampropeltis'', which includes 26 species. Among these, about 45 subspecies are recognized. They are nonvenomous and ophiophagous in diet. Description Kingsnakes vary widely in size and ...
and the venomous
coral snake Coral snakes are a large group of elapid snakes that can be divided into two distinct groups, the Old World coral snakes and New World coral snakes. There are 16 species of Old World coral snakes, in three genera (''Calliophis'', '' Hemibungarus' ...
** Red on black, venom lack; red on yellow, kill a fellow. **Red on yellow, kill a fellow; red on black, friend to Jack. *To recognize poison ivy **Leaves of three, leave it be. *COWS stand for Cold Opposite Warm Same, which are the relation between the components of the
Caloric reflex test In medicine Medicine is the science and practice of caring for a patient, managing the diagnosis, prognosis, prevention, treatment, palliation of their injury or disease, and promoting their health. Medicine encompasses a variety of ...


Chemistry

To recall the names of the first 20 elements in the
periodic table The periodic table, also known as the periodic table of the (chemical) elements, is a rows and columns arrangement of the chemical elements. It is widely used in chemistry, physics, and other sciences, and is generally seen as an icon of ch ...
: :
Harry Harry may refer to: TV shows * ''Harry'' (American TV series), a 1987 American comedy series starring Alan Arkin * ''Harry'' (British TV series), a 1993 BBC drama that ran for two seasons * ''Harry'' (talk show), a 2016 American daytime talk show ...
, he likes
beer Beer is one of the oldest and the most widely consumed type of alcoholic drink in the world, and the third most popular drink overall after water and tea. It is produced by the brewing and fermentation of starches, mainly derived from ce ...
by cupfuls, not
over Over may refer to: Places *Over, Cambridgeshire, England *Over, Cheshire, England *Over, South Gloucestershire, England * Over, Tewkesbury, near Gloucester, England ** Over Bridge *Over, Seevetal, Germany Music Albums * ''Over'' (album), by Pe ...
frothy, never nasty mugs allowed. Since
past The past is the set of all events that occurred before a given point in time. The past is contrasted with and defined by the present and the future. The concept of the past is derived from the linear fashion in which human observers experience t ...
six 6 is a number, numeral, and glyph. 6 or six may also refer to: * AD 6, the sixth year of the AD era * 6 BC, the sixth year before the AD era * The month of June Science * Carbon, the element with atomic number 6 * 6 Hebe, an asteroid People ...
closing Closing may refer to: Business and law * Closing (law), a closing argument, a summation * Closing (real estate), the final step in executing a real estate transaction * Closing (sales), the process of making a sale * Closure (business), Closing a ...
, are
kegs A keg is a small barrel. Wooden kegs made by a cooper were used to transport nails, gunpowder, and a variety of liquids. A keg is normally now constructed of stainless steel, although aluminium can be used if it is coated with plastic on ...
cancelled? :(H, He, Li, Be, B, C, N, O, F, Ne, Na, Mg, Al, Si, P, S, Cl, Ar, K, Ca.) To remember the different charges of the anode and cathode in electrolysis (PANIC): Positive Anode Negative Is Cathode AN OIL RIG CAT: * At the ANode, Oxidation Involves electron Loss. * Reduction Involves electron Gain at the CAThode.


Engineering

*For the EIA electronic color code, Black(0), Brown(1), Red(2), Orange(3), Yellow(4), Green(5), Blue(6), Violet(7), Gray(8), White(9), Gold(5%), Silver(10%), None(20%) ::Big brown rabbits often yield great big vocal groans when gingerly slapped ::Bad boys run our young girls behind victory garden walls ::B .B Roy fGreat Britain asVery Good Wife. *A mnemonic to remember which way to turn common ( right-hand thread) screws and nuts, including light bulbs, is "Righty-tighty, Lefty-loosey"; another is "Right on, Left off". * For the OSI
Network Layer In the seven-layer OSI model of computer networking, the network layer is layer 3. The network layer is responsible for packet forwarding including routing through intermediate routers. Functions The network layer provides the means of transfe ...
model Please Do Not Throw Sausage Pizza Away correspond to the Physical, Datalink, Network, Transport, Session, Presentation and Application layers. *For power in watts: Twinkle twinkle little star, Power equals I squared


Geography

*Both names of the northern Circle_of_latitude#Major_circles_of_latitude, major circles of latitude (the Arctic Circle and Tropic of Cancer) have six letters; both southern ones (the Antarctic Circle and Tropic of Capricorn) have nine. *The countries of
South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the southe ...
in order of largest to smallest by area:
Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...
,
Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, th ...
,
Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_symbol = Great Seal of the State , other_symbol_type = Seal (emblem), National seal , national_motto = "Fi ...
,
Colombia Colombia (, ; ), officially the Republic of Colombia, is a country in South America with insular regions in North America—near Nicaragua's Caribbean coast—as well as in the Pacific Ocean. The Colombian mainland is bordered by the Car ...
,
Bolivia , image_flag = Bandera de Bolivia (Estado).svg , flag_alt = Horizontal tricolor (red, yellow, and green from top to bottom) with the coat of arms of Bolivia in the center , flag_alt2 = 7 × 7 square p ...
,
Venezuela Venezuela (; ), officially the Bolivarian Republic of Venezuela ( es, link=no, República Bolivariana de Venezuela), is a country on the northern coast of South America, consisting of a continental landmass and many islands and islets in th ...
,
Chile Chile, officially the Republic of Chile, is a country in the western part of South America. It is the southernmost country in the world, and the closest to Antarctica, occupying a long and narrow strip of land between the Andes to the east a ...
,
Paraguay Paraguay (; ), officially the Republic of Paraguay ( es, República del Paraguay, links=no; gn, Tavakuairetã Paraguái, links=si), is a landlocked country in South America. It is bordered by Argentina to the south and southwest, Brazil to th ...
,
Ecuador Ecuador ( ; ; Quechua: ''Ikwayur''; Shuar: ''Ecuador'' or ''Ekuatur''), officially the Republic of Ecuador ( es, República del Ecuador, which literally translates as "Republic of the Equator"; Quechua: ''Ikwadur Ripuwlika''; Shuar: ''Eku ...
,
Guyana Guyana ( or ), officially the Cooperative Republic of Guyana, is a country on the northern mainland of South America. Guyana is an indigenous word which means "Land of Many Waters". The capital city is Georgetown. Guyana is bordered by the ...
,
Uruguay Uruguay (; ), officially the Oriental Republic of Uruguay ( es, República Oriental del Uruguay), is a country in South America. It shares borders with Argentina to its west and southwest and Brazil to its north and northeast; while bordering ...
,
Suriname Suriname (; srn, Sranankondre or ), officially the Republic of Suriname ( nl, Republiek Suriname , srn, Ripolik fu Sranan), is a country on the northeastern Atlantic coast of South America. It is bordered by the Atlantic Ocean to the north ...
:*Boring, Average Politics Can Become Very Corrupt. People Everywhere Get Used Sometimes *The countries of
Central America Central America ( es, América Central or ) is a subregion of the Americas. Its boundaries are defined as bordering the United States to the north, Colombia to the south, the Caribbean Sea to the east, and the Pacific Ocean to the west. ...
from North to South:
Belize Belize (; bzj, Bileez) is a Caribbean and Central American country on the northeastern coast of Central America. It is bordered by Mexico to the north, the Caribbean Sea to the east, and Guatemala to the west and south. It also shares a wate ...
,
Guatemala Guatemala ( ; ), officially the Republic of Guatemala ( es, República de Guatemala, links=no), is a country in Central America. It is bordered to the north and west by Mexico; to the northeast by Belize and the Caribbean; to the east by H ...
,
El Salvador El Salvador (; , meaning " The Saviour"), officially the Republic of El Salvador ( es, República de El Salvador), is a country in Central America. It is bordered on the northeast by Honduras, on the northwest by Guatemala, and on the south b ...
,
Honduras Honduras, officially the Republic of Honduras, is a country in Central America. The republic of Honduras is bordered to the west by Guatemala, to the southwest by El Salvador, to the southeast by Nicaragua, to the south by the Pacific Oce ...
,
Nicaragua Nicaragua (; ), officially the Republic of Nicaragua (), is the largest country in Central America, bordered by Honduras to the north, the Caribbean to the east, Costa Rica to the south, and the Pacific Ocean to the west. Managua is the cou ...
,
Costa Rica Costa Rica (, ; ; literally "Rich Coast"), officially the Republic of Costa Rica ( es, República de Costa Rica), is a country in the Central American region of North America, bordered by Nicaragua to the north, the Caribbean Sea to the no ...
,
Panama Panama ( , ; es, link=no, Panamá ), officially the Republic of Panama ( es, República de Panamá), is a transcontinental country spanning the southern part of North America and the northern part of South America. It is bordered by Cos ...
:*Big Gorillas Eat Hotdogs, Not Cold Pizza :*Including
Mexico Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatema ...
, My Grandma Bunny Eats Hamburgers, Not Canned Peas * The Great Lakes in order of largest to smallest: Superior,
Huron Huron may refer to: People * Wyandot people (or Wendat), indigenous to North America * Wyandot language, spoken by them * Huron-Wendat Nation, a Huron-Wendat First Nation with a community in Wendake, Quebec * Nottawaseppi Huron Band of Potawatomi ...
,
Michigan Michigan () is a state in the Great Lakes region of the upper Midwestern United States. With a population of nearly 10.12 million and an area of nearly , Michigan is the 10th-largest state by population, the 11th-largest by area, and the ...
,
Erie Erie (; ) is a city on the south shore of Lake Erie and the county seat of Erie County, Pennsylvania, United States. Erie is the fifth largest city in Pennsylvania and the largest city in Northwestern Pennsylvania with a population of 94,831 a ...
,
Ontario Ontario ( ; ) is one of the thirteen provinces and territories of Canada.Ontario is located in the geographic eastern half of Canada, but it has historically and politically been considered to be part of Central Canada. Located in Central Ca ...
:*Super Heroes Must Eat Oats *Or just to remember them at all :*Huron Ontario Michigan Erie Superior: HOMES *The principal factors affecting
climate Climate is the long-term weather pattern in an area, typically averaged over 30 years. More rigorously, it is the mean and variability of meteorological variables over a time spanning from months to millions of years. Some of the meteorologic ...
: LABDOWA :
Latitude In geography, latitude is a coordinate that specifies the north– south position of a point on the surface of the Earth or another celestial body. Latitude is given as an angle that ranges from –90° at the south pole to 90° at the north pol ...
,
Altitude Altitude or height (also sometimes known as depth) is a distance measurement, usually in the vertical or "up" direction, between a reference datum and a point or object. The exact definition and reference datum varies according to the context ...
, Build, Distance from the sea, Ocean currents, Wind,
Aspect Aspect or Aspects may refer to: Entertainment * ''Aspect magazine'', a biannual DVD magazine showcasing new media art * Aspect Co., a Japanese video game company * Aspects (band), a hip hop group from Bristol, England * ''Aspects'' (Benny Carter ...
* The countries bordering Germany (clockwise from top): Denmark, Poland, Czechia, Austria, Switzerland, France, Luxembourg, Belgium, Netherlands. ** Do Polish Checks Always Say" France Look Back Now"!


Geology

*
Geological periods The geologic time scale, or geological time scale, (GTS) is a representation of time based on the rock record of Earth. It is a system of chronological dating that uses chronostratigraphy (the process of relating strata to time) and geochron ...
: Precambrian, Cambrian, Ordovician, Silurian, Devonian, Carboniferous, Permian, Triassic, Jurassic, Cretaceous, Paleocene, Eocene, Oligocene, Miocene, Pliocene, Pleistocene, Recent (Holocene) :*Pregnant Camels Often Sit Down Carefully, Perhaps Their Joints Creak? Possibly Early Oiling Might Prevent Permanent Rheumatism :*Paleozoic to Cenozoic: Pregnant Camels Ordinarily Sit Down Carefully, Perhaps Their Joints Creak *
Mohs scale of mineral hardness The Mohs scale of mineral hardness () is a qualitative ordinal scale, from 1 to 10, characterizing scratch resistance of various minerals through the ability of harder material to scratch softer material. The scale was introduced in 1812 by th ...
1-10: :For Talc(=1), Gypsum(=2), Calcite(=3), Fluorite(=4), Apatite(=5), Orthoclase(=6), Quartz(=7), Topaz(=8), Corundum(=9), Diamond(=10) :*Tall Girls Can Fight And Other Queer Things Can Develop :*TAll GYroscopes CAn FLy APart ORbiting QUickly TO COmplete DIsintegration :*Toronto Girls Can Flirt And Only Quit To Chase Dwarves :*Terrible Giants Can Find Alligators Or Quaint Trolls Conveniently Digestible :*Tall Gene Calls Florence At Our Quarters To Correct Dumbness'' *Differentiating stalactites from
stalagmites A stalagmite (, ; from the Greek , from , "dropping, trickling") is a type of rock formation that rises from the floor of a cave due to the accumulation of material deposited on the floor from ceiling drippings. Stalagmites are typically ...
. **The 'mites go up and the 'tites come down. When one has ants in one's pants, the ''mites'' go up and the ''tights'' come down. (In a strict scientific sense, a
mite Mites are small arachnids (eight-legged arthropods). Mites span two large orders of arachnids, the Acariformes and the Parasitiformes, which were historically grouped together in the subclass Acari, but genetic analysis does not show clear evid ...
is not an
ant Ants are eusocial insects of the family Formicidae and, along with the related wasps and bees, belong to the order Hymenoptera. Ants evolved from vespoid wasp ancestors in the Cretaceous period. More than 13,800 of an estimated total of 22 ...
, although "mite" in common speech can refer to any small creature.) **Stalactites hang tight, hang down like
tights Tights are a kind of cloth garment, most often sheathing the body from the waist to the toe tips with a tight fit, hence the name. They come in absolute opaque, opaque, sheer and fishnet styles — or a combination, such as the original concept ...
on a line; stalagmites might bite (if you sit on them), ''might'' reach the roof. **Tights hang from the Ceiling, and Mites crawl around on the Ground **You need might to do push-ups (from the floor). You must hold tight doing chin-ups (off the ceiling). **Stalactites are on the ceiling. Stalagmites are on the ground. **Stalactites cling tight to the ceiling; stalagmites might reach the ceiling.


History

* Chinese dynasties (simplified): Xia (Hsia), Shang, Zhou (Chou), Qin (Ch'in), Han, Jin, Southern and Northern, Sui, Tang, Song, Yuan, Ming, Qing (Ching) :*She Shamefully Chose Chinese Hand Jingles (and) SiNfully Sweet Tango Songs: "You (and) Me, Chickadee!" *English dynasties (simplified): Norman, Plantagenet, Lancaster, York, Tudor, Stuart, Hanover, Windsor :*No Plan Like Yours To Study History Wisely. : *Wives of Henry VIII (names): Aragon, Boleyn, Seymour, Cleves, Howard, Parr :*All Boys Should Come Home Please *Wives of Henry VIII (manner of death): Divorced, beheaded, died / Divorced, beheaded, survived. *British nobility rank order (simplified): Duke, Marquess, Earl, Viscount, Barons :*Do Men Ever Visit Boston? * Assassinated US presidents and perpetrators: Lincoln by Booth, Garfield by Guiteau, McKinley by Czolgosz and Kennedy by Oswald. :*Losers Bearing Grudges Grieve Mainly Cowards Killing Orators


Languages


Characteristic sequence of letters

*I always comes before E (but after C, E comes before I) In most words like friend, field, piece, pierce, mischief, thief, tier, it is "''i''" which comes before "''e''". But on some words with ''c'' just before the pair of ''e'' and ''i'', like receive, perceive, "''e''" comes before "''i''". This can be remembered by the following mnemonic, ::: ''I before E, except after C'' But this is not always obeyed as in case of weird and weigh, weight, height, neighbor etc. and can be remembered by extending that mnemonic as given below :::''I before E, except after C'' :::''Or when sounded "''A''" as in neighbor, weigh and weight'' :::''Or when sounded like "''eye''" as in height'' :::''And "weird" is just weird'' Another variant, which avoids confusion when the two letters represent different sounds instead of a single sound, as in atheist or being, runs :::When it says ee :::Put i before e :::But not after c *Where ever there is a Q there is a U too Most frequently ''u'' follows ''q''. e.g.: Que, queen, question, quack, quark, quartz, quarry, quit, Pique, torque, macaque, exchequer. Hence the mnemonic: :::''Where ever there is a Q there is a U too'' (But this is violated by some words; see:
List of English words containing Q not followed by U In English, the letter '' Q'' is usually followed by the letter '' U'', but there are some exceptions. The majority of these are anglicised from Arabic, Chinese, Hebrew, Inuktitut, or other languages that do not use the English alphabet, with ' ...
)


Letters of specific syllables in a word

*BELIEVE ::Do not believe a lie. *SECRETARY ::A secretary must keep a secret *TEACHER ::There is an ache in every teacher. *MEASUREMENT ::Be sure of your measurements before you start work. *FRIEND ::''Fri'' the end of your ''fri''end *SPECIAL ::The CIA have special agents *BEAUTIFUL ::Big Elephants Are Uglyhttp://www.skillsworkshop.org/sites/skillsworkshop.org/files/resources/word/e1l2mnemonic.pdf *SEPARATE ::Always smell ''a'' rat when you spell sep''a''rate ::''There was a farmer named Sep and one day his wife saw a rat. She yelled, “Sep! A rat – E!!!”'' *CEMETERY ::There are three "e"s buried in "cemetery". *PRINCIPAL ::The principal is your pal.


Distinguishing between similar words

*Difference between Advice & Advise, Practice & Practise, Licence & License etc. Advice, Practice, Licence etc. (those with c) are nouns and Advise, Practise, License etc. are verbs. :::''One way of remembering this is that the word ‘noun’ comes before the word ‘verb’ in the dictionary; likewise ‘c’ comes before ‘s’, so the nouns are ‘practice, licence, advice’ and the verbs are ‘practise, license, advise’.'' *Here or Hear ::We hear with our ear. *Complement and Compliment ::complement ''adds something to make it enough'' ::compliment ''puts you in the limelight'' *Principle and Principal ::Your principal is your pal ::A rule can be called a principle *Remedial and Menial ::Remedial work is meant to remedy. ::Menial work is boring but it's mean (-ial) to complain. *Their, There and They're ::Theirs is not mine even though 'I' is in it. ::There is where we'll be. ::They're is a contraction of 'they are.' *Stationary and stationery ::Stationery contains er and so does paper; stationary (not moving) contains ar and so does car ::A for "at rest", e for envelope *Gray and grey ::Gray is preferred in America while grey is preferred in England


First letter mnemonics of spelling

*DIARRH(O)EA ::Dashing In A Rush, Running Harder (or) Else Accident! ::Dining In A Rough Restaurant: Hurry, (otherwise)Expect Accidents! ::Diarrhea Is A Really Runny Heap (of) Endless Amounts *ARITHMETIC ::A Rat In The House May Eat The Ice CreamMnemonics > Useful mnemonics
/ref> *NECESSARY ::Not Every Cat Eats Sardines (Some Are Really Yummy) ::Never Eat Chocolate, Eat Sardine Sandwiches And Remain Young *BECAUSE ::Big Elephants Can Always Understand Small Elephants ::Big Elephants Cause Accidents Under Small Elephants ::Big Elephants Can't Always Use Small Exits ::Big Elephants Can’t Always Use Small Entrances *MNEMONICS ::Mnemonics Now Erase Man's Oldest Nemesis, Insufficient Cerebral Storage *GEOGRAPHY ::George's Elderly Old Grandfather Rode A Pig Home Yesterday. *TOMORROW ::Trails Of My Old Red Rose Over Window *RHYTHM ::Rhythm Helps Your Two Hips Move


Grammar

* Adjective order in English: OSASCOMP (Opinion, Size, Age, Shape, Color, Origin, Material, Purpose) **On Saturday And Sunday Cold Ovens Make Pastry * Commonly-used coordinating
conjunction Conjunction may refer to: * Conjunction (grammar), a part of speech * Logical conjunction, a mathematical operator ** Conjunction introduction, a rule of inference of propositional logic * Conjunction (astronomy), in which two astronomical bodies ...
s in English: FANBOYS **For, And, Nor, But, Or, Yet, So *The verbs in French that use the auxiliary verb ''être'' in the compound past (sometimes called " verbs of motion") can be memorized using the phrase "Dr. (and) Mrs. Vandertramp": :''devenir'', ''revenir'', ''monter'', ''rester'', ''sortir'', ''venir'', ''aller'', ''naître'', ''descendre'', ''entrer'', ''rentrer'', ''tomber'', ''retourner'', ''arriver'', ''mourir'', ''partir''


Mathematics


Pi

The first 15 numbers of Pi can be remembered by counting the letters in the phrase, How I want a drink, alcoholic of course, after the heavy lectures involving quantum mechanics


Quadratic equation

The articulation of the quadratic equation can be sung to the tune of various songs as a mnemonic device.


Mathematical operations

For helping students in remembering the rules in adding and multiplying two signed numbers, Balbuena and Buayan (2015) made the letter strategies LAUS (like signs, add; unlike signs, subtract) and LPUN (like signs, positive; unlike signs, negative), respectively.
Order of Operations
PEMDAS
Please - Parenthesis
Excuse - Exponents
My - Multiplication
Dear - Division
Aunt - Addition
Sally - Subtraction
(In the UK, the phrase BIDMAS is used instead; Brackets, Indices, Division, Multiplication, Addition, Subtraction.)


Trigonometry

The mnemonic "SOHCAHTOA" (occasionally spelt "SOH CAH TOA") is often used to remember the basic
trigonometric functions In mathematics, the trigonometric functions (also called circular functions, angle functions or goniometric functions) are real functions which relate an angle of a right-angled triangle to ratios of two side lengths. They are widely used in all ...
: * Sine = Opposite / Hypotenuse * Cosine = Adjacent / Hypotenuse * Tangent = Opposite / Adjacent Other mnemonics that have been used for this include: Some Old Hippie Caught Another Hippie Tripping On Acid. Ships Of Holland Call At Harwich To Obtain Apples. Sighs Of Happiness Come After Having Tankards Of Ale. Some Old Hen Caught Another Hen Taking Off Alone. Silly Old Hitler Can't Advance His Troops On Africa.


Topology

Mnemonics for Euler's characteristic are "fav. me", for "''F''  add ''V'', minus ''E'' ", and "veryfun".


Calculus

The mnemonic "LIATE" is commonly used to determine which functions are to be chosen as ''u'' and ''DV'' in
integration by parts In calculus, and more generally in mathematical analysis, integration by parts or partial integration is a process that finds the integral of a product of functions in terms of the integral of the product of their derivative and antiderivative. ...
. * Logarithmic functions * Inverse trigonometric functions * Algebraic functions * Trigonometric functions * Exponential functions


Medicine

*To remember the signs of a
stroke A stroke is a medical condition in which poor blood flow to the brain causes cell death. There are two main types of stroke: ischemic, due to lack of blood flow, and hemorrhagic, due to bleeding. Both cause parts of the brain to stop functionin ...
: ** FAST *** Face (Has the victim's face fallen on one side?) *** Arms (Can the victim raise both arms and keep them raised?) *** Speech (Is the victim's speech slurred? Can they repeat a simple sentence?) *** Time (It is time to contact emergency services.) *To remember the steps for
Resuscitation Resuscitation is the process of correcting physiological disorders (such as lack of breathing or heartbeat) in an acutely ill patient. It is an important part of intensive care medicine, anesthesiology, trauma surgery and emergency medicine. W ...
: ** D.R.S. A.B.C.D *** Danger (Check for danger to yourself or others before starting) *** Response (Check for signs of life or response) *** Send for help (Call for backup, or Emergency services) *** Airway (Check for obstruction in the throat) *** Breaths (Check for breaths) *** CPR (Commence CPR) *** Defib (Apply Defibrillator)


Anatomy

*To remember the 10 organ systems of the human body: ** NICER DRUMS (Nervous, Integumentary, Circulatory, Endocrine, Respiratory, Digestive, Reproductive, Urinary, Muscular, Skeletal) *Intrinsic muscles of hand 'A OF A OF A' Thenar (lateral to medial-palmar surface): Abductor pollicis brevis Opponens pollicis Flexor pollicis brevis Adductor pollicis Hypothenar (lateral to medial-palmar surface): Opponens digiti minimi Flexor digiti minimi Abductor digiti minimi *Muscles of mandibular nerve (V3 of trigeminal nerve) :
Mylohyoid,
Tensor tympani The tensor tympani is a muscle within the middle ear, located in the bony canal above the bony part of the auditory tube, and connects to the malleus bone. Its role is to dampen loud sounds, such as those produced from chewing, shouting, or th ...
+
Tensor veli palatini The tensor veli palatini muscle (tensor palati or tensor muscle of the velum palatinum) is a broad, thin, ribbon-like muscle in the head that tenses the soft palate. Structure The tensor veli palatini is found anterior-lateral to the levator ve ...
, Digastric (Anterior) – 4 Muscles of Mastication (
temporalis In anatomy, the temporalis muscle, also known as the temporal muscle, is one of the muscles of mastication (chewing). It is a broad, fan-shaped convergent muscle on each side of the head that fills the temporal fossa, superior to the zygomatic a ...
,
masseter In human anatomy, the masseter is one of the muscles of mastication. Found only in mammals, it is particularly powerful in herbivores to facilitate chewing of plant matter. The most obvious muscle of mastication is the masseter muscle, since it ...
, medial and lateral pterygoids : My Tensors Dig Ants for Mom : 2 big ones, 2 small ones, 2 tensors, 2 pterygoids *Bones of the wrist:
Scaphoid bone The scaphoid bone is one of the carpal bones of the wrist. It is situated between the hand and forearm on the thumb side of the wrist (also called the lateral or radial side). It forms the radial border of the carpal tunnel. The scaphoid bone is ...
,
Lunate bone The lunate bone (semilunar bone) is a carpal bone in the human hand. It is distinguished by its deep concavity and crescentic outline. It is situated in the center of the proximal row carpal bones, which lie between the ulna and radius and the han ...
,
Triquetral bone The triquetral bone (; also called triquetrum, pyramidal, three-faced, and formerly cuneiform bone) is located in the wrist on the medial side of the proximal row of the carpus between the lunate and pisiform bones. It is on the ulnar side of th ...
,
Pisiform bone The pisiform bone ( or ), also spelled pisiforme (from the Latin ''pisifomis'', pea-shaped), is a small knobbly, sesamoid bone that is found in the wrist. It forms the ulnar border of the carpal tunnel. Structure The pisiform is a sesamoid bone, ...
,
Trapezium (bone) The trapezium bone (greater multangular bone) is a carpal bone in the hand. It forms the radial border of the carpal tunnel. Structure The trapezium is distinguished by a deep groove on its anterior surface. It is situated at the radial side of ...
,
Trapezoid bone The trapezoid bone (lesser multangular bone) is a carpal bone in tetrapods, including humans. It is the smallest bone in the distal row of carpal bones that give structure to the palm of the hand. It may be known by its wedge-shaped form, the br ...
,
Capitate bone The capitate bone is a bone in the human wrist found in the center of the carpal bone region, located at the distal end of the radius and ulna bones. It articulates with the third metacarpal bone (the middle finger) and forms the third carpomet ...
&
Hamate bone The hamate bone (from Latin hamatus, "hooked"), or unciform bone (from Latin ''uncus'', "hook"), Latin os hamatum and occasionally abbreviated as just hamatum, is a bone in the human wrist readily distinguishable by its wedge shape and a hook-l ...
: Some Lovers Try Positions That They Can't Handle : She Looks Too Pretty Try To Catch Her : So Long To Pinky, Here Comes The Thumb : Simply Learn The Positions That The Carpus Has : Send Louis To Paris To Tame Carnal Hungers : Stop Letting Those People Touch The Cadaver's Hands *Differential Diagnosis : VINDICATE *
Cranial nerves Cranial nerves are the nerves that emerge directly from the brain (including the brainstem), of which there are conventionally considered twelve pairs. Cranial nerves relay information between the brain and parts of the body, primarily to and f ...


Music


Bowed strings

* Mnemonics are used in remembering string names in violin standard tuning. ** Good Dogs Always Eat ** Greedy Dogs Always Eat * Mnemonics are used in remembering string names in viola standard tuning. ** Cats Give Dogs Advice


Guitar

*Mnemonics are used in remembering guitar string names in standard tuning. :*Every Average Dude Gets Better Eventually :*Eggs Are Deliciously Good Breakfast Energy :*Eddy Ate Dynamite Good Bye Eddy :*Every Adult Dog Growls Barks Eats. :*Every Acid Dealer Gets Busted Eventually :*Even After Dinner Giant Boys Eat :*Elephants And Donkeys Grow Big Ears :*Every American Dog Gets Bones Easily :*Every Angel Does Good Before Evil :*Eat All Day Get Big Easy :*Eine Alte Dame Geht Heute Einkaufen (German: ''an old lady goes shopping today'') :*Een Aap Die Geen Bananen Eet (Dutch: ''A monkey that doesn't eat bananas)'' Thus we get the names of the strings from 6th string to the 1st string in that order. Conversely, a mnemonic listing the strings in the reverse order is: :*Every Beginning Guitarist Does All Exercises! :*Elvis' Big Great Dane Ate Everything :*Every Big Girl Deserves An Elephant :*Easter Bunny Gets Drunk At Easter :*Easter Bunnies Go Dancing After Easter


Ukulele

As for guitar tuning, there is also a mnemonic for ukuleles. :*Good Cooks Eat A-lot :*In the other direction it is Aunt Evy Cooks Grits


Reading music

* Musicians can remember the notes associated with the five lines of the
treble clef A clef (from French: 'key') is a Musical notation, musical symbol used to indicate which Musical note, notes are represented by the lines and spaces on a musical staff (music), stave. Placing a clef on a stave assigns a particular pitch to ...
using any of the following mnemonics, EGBDF: ''(from the bottom line to the top)'' :*'' Every Good Boy Does Fine.'' :*'' Every Good Boy Deserves Fudge (or Friendship, Fun, Fruit, etc.)'' :* ''Eggnog Gets Better During February'' :*'' Empty Garbage Before Dad Flips'' *The four spaces of the
treble clef A clef (from French: 'key') is a Musical notation, musical symbol used to indicate which Musical note, notes are represented by the lines and spaces on a musical staff (music), stave. Placing a clef on a stave assigns a particular pitch to ...
spell out (from the bottom to the top) FACE and can be remembered as FACE fits in the space (between lines) * The five lines of the
bass clef A clef (from French: 'key') is a musical symbol used to indicate which notes are represented by the lines and spaces on a musical stave. Placing a clef on a stave assigns a particular pitch to one of the five lines, which defines the pit ...
from the bottom to the top :*'' Good Boys Do Fine Always'' :*'' Good Birds Don't Fly Away'' :*'' Grizzly Bears Don't Fly Airplanes'' :*'' Great Basses Dig Fine Altos'' :*'' Goblins Bring Death For All'' :* ''George'' ''Bush Didn't Find'' ''Anything'' :* ''Good Burritos Don't Fall Apart'' * The four spaces of the bass clef from the bottom to the top :*'' All Cows Eat Grass'' :*'' All Cars Eat Gas'' * The five lines of the
alto clef A clef (from French: 'key') is a musical symbol used to indicate which notes are represented by the lines and spaces on a musical stave. Placing a clef on a stave assigns a particular pitch to one of the five lines, which defines the pit ...
from the bottom to the top :*'' Fat Alley Cat Eats Garbage'' * The four spaces of the alto clef from the bottom to the top :*'' Green Birds Do Fly'' * The order of sharps in
key signature In Western musical notation, a key signature is a set of sharp (), flat (), or rarely, natural () symbols placed on the staff at the beginning of a section of music. The initial key signature in a piece is placed immediately after the clef at ...
notation is F♯, C♯, G♯, D♯, A♯, E♯, B♯, which can be remembered using the phrase :*'' Father Charles Goes Down And Ends Battle'' :*'' Father Christmas Gave Dad An Electric Blanket.Schonbrun, Marc (2005). ''The Everything Music Theory Book'', p.68. .'' :*'' Fat Cats Go Down Alleys Eating Birds.'' :*'' Fidel Castro Gets Drunk And Eats Babies.'' :*'' Fat Cats Greedy Dogs All Eat Bananas.'' * The order of
flats Flat or flats may refer to: Architecture * Flat (housing), an apartment in the United Kingdom, Ireland, Australia and other Commonwealth countries Arts and entertainment * Flat (music), a symbol () which denotes a lower pitch * Flat (soldier), ...
is B♭, E♭, A♭, D♭, G♭, C♭, and F♭ (reverse order of sharps), which can be remembered using the phrase: :*'' Battle Ends And Down Goes Charles' Father'' :*'' Blanket Exploded And Dad Got Cold Feet.'' :*'' Before Eating A Doughnut Get Coffee First.'' * To remember the difference between the
whole rest A rest is a musical notation sign that indicates the absence of a sound. Each rest symbol and name corresponds with a particular note value for length, indicating how long the silence should last. Description Rests are intervals of silence in ...
and the
half rest A rest is a musical notation sign that indicates the absence of a sound. Each rest symbol and name corresponds with a particular note value for length, indicating how long the silence should last. Description Rests are intervals of silence ...
: ** A whole rest looks like a "hole in the ground", and a half rest looks like a hat.


Philosophy

*THE LAD ZAPPA is a mnemonic for the first 11 (and most important) Ionian philosophers: Thales, Heraclitus, Empedocles, Leucippus, Anaximander, Democritus, Zeno, Anaximenes, Protagoras, Parmenides, Anaxagoras . *THE PLAZA PAD is another mnemonic for the first 11 (and most important) Ionian philosophers: Thales, Heraclitus, Empedocles, Protagoras, Leucippus, Anaximander, Zeno, Anaximenes, Parmenides, Anaxagoras, Democritus. *SPA is a mnemonic for the philosophers Socrates, Plato, and Aristotle in their order of appearance, Socrates first.


Physics

*Sequence of colors in a rainbow or visible spectrum (red, orange, yellow, green, blue, indigo, violet): :: "Richard Of York Gave Battle In Vain" :: Roy G. Biv is also used as a fictitious name


Transportation

* Marine in the section "The coming in going out rule" :* "Red, Right, Return" reminds the skipper entering ("returning to") an IALA region B port to keep red markers to the starboard of the vessel. Conversely the opposite convention exists in IALA region A ports, where a similar (but significantly different) mnemonic of "Red on the Right Returning To Sea" can be used. :*The phrase "there's always some red
port A port is a maritime facility comprising one or more wharves or loading areas, where ships load and discharge cargo and passengers. Although usually situated on a sea coast or estuary, ports can also be found far inland, such as Ham ...
(
wine Wine is an alcoholic drink typically made from fermented grapes. Yeast consumes the sugar in the grapes and converts it to ethanol and carbon dioxide, releasing heat in the process. Different varieties of grapes and strains of yeasts are m ...
)
left Left may refer to: Music * ''Left'' (Hope of the States album), 2006 * ''Left'' (Monkey House album), 2016 * "Left", a song by Nickelback from the album ''Curb'', 1996 Direction * Left (direction), the relative direction opposite of right * L ...
" is used to remember the basics in seafaring. "Red" refers to the color of navigation lights on the port (left) side of a vessel (as opposed to green on the starboard side). :*"Nuclear Restrictions Constrain Fishing and Sailing, People Say" is used to encode the "order of priority" for which vessels have
right of way Right of way is the legal right, established by grant from a landowner or long usage (i.e. by prescription), to pass along a specific route through property belonging to another. A similar ''right of access'' also exists on land held by a gov ...
(earlier in the list has priority over later): Not under command; Restricted; Constrained by draft; Fishing vessel; Sailboat; Powerboat; Seaplane. * AviationUseful Aviation Mnemonics
(published by Dauntless Software, Inc.)
uses many mnemonics in addition to written
checklist A checklist is a type of job aid used in repetitive tasks to reduce failure by compensating for potential limits of human memory and attention. It helps to ensure consistency and completeness in carrying out a task. A basic example is the " to d ...
s. See also
Aviation mnemonics Mnemonics are used by aircraft pilots for the safe management of a flight. List of mnemonics * ANDS (in the Northern hemisphere) - Accelerate North Decelerate South. SAND in the Southern hemisphere. * BLITTS - pre-takeoff checks *BUMMMFITCHH - pre ...
:*
CRAFT A craft or trade is a pastime or an occupation that requires particular skills and knowledge of skilled work. In a historical sense, particularly the Middle Ages and earlier, the term is usually applied to people occupied in small scale prod ...
- Clearance limit, Route, Altitude, Frequency, Transponder. :*pre-landing: GUMPS - Gas, Undercarriage, Mixture, Propeller, Speed. :* pre-final: MARTHA - Missed (procedure), Altitude (limit), Radios (set), Time (limit), Heading (final), Airspeed (descent) :* pre-high-altitude - FLOWER - Flow (enabled), Lights (test), Oxygen (charged), Water (humidity), Electricity (on), Radio (check) :* pre-flight-paperwork - ARROW - Airworthiness (certificate), Registration, Required (charts), Operating (checklists), Weight and balance :* night collision avoidance: Red, Right, Returning - Red nav light on Right implies target is Returning (closing) :* radio loss Instrument course - CDEF - as Cleared, else Direct to last fix, else as directed to Expect, else as flight plan Filed :* spin recovery - POKER - Power (off), Opposite (full rudder), Klean (flaps, ...), Elevator (briskly forward), Recover (from dive)


Units of measure

*Common
SI prefix The International System of Units, known by the international abbreviation SI in all languages and sometimes pleonastically as the SI system, is the modern form of the metric system and the world's most widely used system of measurement. E ...
es: :*''kilo-, hecto-, deca-, deci-, centi-, milli-,'' in descending order of magnitude: ::''"Base" (Meters, liters, grams) come in between "deca" and "deci".'' ::*Kangaroos Hop Down British Driveways Carrying M&Ms ::*King Henry Drank Both Diet Cokes Monday ::*King Henry Died By Drinking Chocolate Milk :*''deca-, hecto-, kilo-, mega-, giga-, tera-,'' in ascending order of magnitude: ::*Decadent Hector Killed Meg's Gigantic Terrier :*''deci-,-, milli-, micro-, nano-, pico-, femto-, atto-'' in descending order of magnitude: ::*Darn Clever Mnemonic Makes No Prefix Forgettable, Absolutely


See also

*
Mnemonic A mnemonic ( ) device, or memory device, is any learning technique that aids information retention or retrieval (remembering) in the human memory for better understanding. Mnemonics make use of elaborative encoding, retrieval cues, and imag ...
*
List of firefighting mnemonics This is a list of mnemonics related to firefighting or rescue. Mnemonics Incident priorities LSP Life safety Stabilize incident Property conservation Fire scene priorities RECEO - SV Rescue victims Exposures - stop fire spread Confine - c ...
* List of visual mnemonics *
Science mnemonics Science is a systematic endeavor that Scientific method, builds and organizes knowledge in the form of Testability, testable explanations and predictions about the universe. Science may be as old as the human species, and some of the earli ...


References


Further reading

* *


External links


List of hundreds of mnemonics belonging to several topicsMedical mnemonics pdf (consisting of 22 pages full of) mnemonics on medical topics ordered alphabeticallyMedical mnemonicsSearchable database of Medical mnemonicsMnemonics generator for numbersCollection of MnemonicsCommunity website to collaborate and create new mnemonics
{{DEFAULTSORT:Mnemonics + Psychology lists