M is the thirteenth letter of the modern Latin alphabet. M may also refer to:

Companies and products

* M (fragrance), a 2008 fragrance by Mariah Carey * M (rangefinder), a series of

Leica cameras Leica Camera AG () is a German company that manufactures cameras, optical lenses, photographic lenses, binoculars, rifle scopes and microscopes. The company was founded by Ernst Leitz in 1869 (Ernst Leitz Wetzlar), in Wetzlar, Germany. In ...

M (virtual assistant) M was a virtual assistant by Facebook, first announced in August 2015, that could automatically complete tasks for users, such as purchase items, arrange gift deliveries, reserve restaurant tables, and arrange travel. By April 2017, it was availab ...

, a former virtual assistant in Facebook Messenger * Macy's, Inc. (NYSE: M), an American department store chain * Mercedes-Benz M-Class *

Miracle Mart Miracle Mart was a chain of discount department stores with locations in Ontario and Quebec, Canada based in Saint-Laurent, Quebec. The chain was renamed to simply M in the mid-1980s. History The company was founded in early 1961 as Miracle Mart ...

, a Canadian department store known simply as "M" from 1986 to 1992 * Android M, a code name for the Android Marshmallow operating system * BMW M, a subsidiary of car manufacturer BMW *

Farmall M The Farmall M is a large three-plow row crop tractor produced by International Harvester under the Farmall brand from 1939 to 1953. It was of International Harvester's "List of International Harvester vehicles#Farmall F and Letter Series (1924� ...

, a tractor produced by International Harvester from 1939 to 1952 *

Infiniti M The Infiniti M is a line of mid-size luxury (executive) cars from the Infiniti luxury division of Nissan. From 2013 (model year 2014) on it has been marketed as the Infiniti Q70, reflecting the company's new naming scheme. The first iteration was ...

, a line of cars

Numbers and units of measurement

metre The metre (British spelling) or meter (American spelling; see spelling differences) (from the French unit , from the Greek noun , "measure"), symbol m, is the primary unit of length in the International System of Units (SI), though its pref ...

, symbol m *

mile The mile, sometimes the international mile or statute mile to distinguish it from other miles, is a British imperial unit and United States customary unit of distance; both are based on the older English unit of length equal to 5,280 English ...

(abbr.) *

nautical mile A nautical mile is a unit of length used in air, marine, and space navigation, and for the definition of territorial waters. Historically, it was defined as the meridian arc length corresponding to one minute ( of a degree) of latitude. Today ...

milli- ''Milli'' (symbol m) is a unit prefix in the metric system denoting a factor of one thousandth (10−3). Proposed in 1793, and adopted in 1795, the prefix comes from the Latin , meaning ''one thousand'' (the Latin plural is ). Since 1960, the pre ...

, SI prefix m *

1000 (number) 1000 or one thousand is the natural number following 999 and preceding 1001. In most English-speaking countries, it can be written with or without a comma or sometimes a period separating the thousands digit: 1,000. A group of one thousand th ...

, Roman numeral M *

mega- Mega is a metric prefix, unit prefix in metric systems of units denoting a factor of one million (106 or 1000000 (number), ). It has the unit symbol M. It was confirmed for use in the International System of Units (SI) in 1960. ''Mega'' comes fro ...

, SI prefix M *

million One million (1,000,000), or one thousand thousand, is the natural number following 999,999 and preceding 1,000,001. The word is derived from the early Italian ''millione'' (''milione'' in modern Italian), from ''mille'', "thousand", plus the au ...

(abbr.)

Postal codes

* M, the postal code letter for

Toronto Toronto ( ; or ) is the capital city of the Canadian province of Ontario. With a recorded population of 2,794,356 in 2021, it is the most populous city in Canada and the fourth most populous city in North America. The city is the ancho ...

in Canada *

M postcode area The M postcode area, also known as the Manchester postcode area, is a group of postcode districts in the North West of England. The districts are subdivisions of three post towns: Manchester, Salford and Sale and cover parts of all ten boro ...

, a group of several postcode districts in Greater Manchester

Science and technology

* M (videocassette format), an obsolete recording format *

M-theory M-theory is a theory in physics that unifies all consistent versions of superstring theory. Edward Witten first conjectured the existence of such a theory at a string theory conference at the University of Southern California in 1995. Witten's ...

, a proposed solution for problems in superstring theories *

M band The NATO M band is the obsolete designation given to the radio frequencies from 60 to 100 GHz (equivalent to wavelengths between 5 and 3 mm) during the cold war period. Since 1992 frequency allocations, allotment and assignments are in line to ...

, radio frequencies from 60 to 100 GHz *

Mass Mass is an intrinsic property of a body. It was traditionally believed to be related to the quantity of matter in a physical body, until the discovery of the atom and particle physics. It was found that different atoms and different elementar ...

(symbol ''m'') * Magnetic quantum number (symbol ''m'') * Messier object, in astronomy *

Metal A metal (from Greek μέταλλον ''métallon'', "mine, quarry, metal") is a material that, when freshly prepared, polished, or fractured, shows a lustrous appearance, and conducts electricity and heat relatively well. Metals are typicall ...

(placeholder symbol M) *

Methionine Methionine (symbol Met or M) () is an essential amino acid in humans. As the precursor of other amino acids such as cysteine and taurine, versatile compounds such as SAM-e, and the important antioxidant glutathione, methionine plays a critical ro ...

, an alpha amino acid in biochemistry *

Molality Molality is a measure of the number of moles of solute in a solution corresponding to 1 kg or 1000 g of solvent. This contrasts with the definition of molarity which is based on a specified volume of solution. A commonly used unit for molali ...

(symbol ''m'') * Molar concentration, unit * Molar mass, (symbol ''M'') * ATC code M ''Musculo-skeletal system'', a section of the Anatomical Therapeutic Chemical Classification System * Seismic magnitude scales, various scales of magnitude using variations of M *

Slope In mathematics, the slope or gradient of a line is a number that describes both the ''direction'' and the ''steepness'' of the line. Slope is often denoted by the letter ''m''; there is no clear answer to the question why the letter ''m'' is use ...

, represented by variable ''m'' in a linear equation

Computing

* M or

Wolfram Language The Wolfram Language ( ) is a general multi-paradigm programming language developed by Wolfram Research. It emphasizes symbolic computation, functional programming, and rule-based programming and can employ arbitrary structures and data. It is ...

, the programming language underlying Mathematica * ".m", a

MATLAB MATLAB (an abbreviation of "MATrix LABoratory") is a proprietary multi-paradigm programming language and numeric computing environment developed by MathWorks. MATLAB allows matrix manipulations, plotting of functions and data, implementation ...

GNU Octave GNU Octave is a high-level programming language primarily intended for scientific computing and numerical computation. Octave helps in solving linear and nonlinear problems numerically, and for performing other numerical experiments using a langu ...

file * ".m", a

Mathematica Wolfram Mathematica is a software system with built-in libraries for several areas of technical computing that allow machine learning, statistics, symbolic computation, data manipulation, network analysis, time series analysis, NLP, optimizat ...

package * ".m", an implementation file in Objective-C * M, the

MUMPS MUMPS ("Massachusetts General Hospital Utility Multi-Programming System"), or M, is an imperative, high-level programming language with an integrated transaction processing key–value database. It was originally developed at Massachusetts Gener ...

programming language * M Sharp (programming language) * M-code or just M,

programming language

Transportation

* Mu (rocket family), also known as M, a series of Japanese solid-fuelled carrier rockets *

Copenhagen Metro The Copenhagen Metro ( da, Københavns Metro, ) is a 24/7 rapid transit system in Copenhagen, Denmark, serving the municipalities of Copenhagen, Frederiksberg, and Tårnby. The original system opened in October 2002, serving nine stations on t ...

* M (New York City Subway service) *

M Ocean View The M Ocean View is a Muni Metro light rail line in San Francisco. It originated as one of San Francisco's streetcar lines in the early 20th century. Route description The line runs from Embarcadero station in the Financial District to Geneva ...

, a light rail line in San Francisco, U.S.

Entertainment

Characters

M (Marvel Comics) Penance (Monet Yvette Clarisse Maria Therese St. Croix) is a fictional Female superheroes, superheroine and Mutant (Marvel Comics), mutant appearing in American comic books published by Marvel Comics. The character appears in the ''X-Men'' seri ...

, a character associated with the ''X-Men'' universe * M (James Bond), the codename of the fictional head of MI6 * Minoru Kokubunji, a ''Chobits'' anime character nicknamed M

Film and television

* ''M'' (1931 film), a German film directed by Fritz Lang * ''M'' (1951 film), a remake of the previous, shifting the action from Berlin to Los Angeles * ''M'', a 2006 Japanese film directed by

Ryūichi Hiroki is a Japanese film director. He won critical acclaim for ''800 Two Lap Runners''. Film critic and researcher Alexander Jacoby has described Hiroki as "one of the modern Japanese cinema's most intelligent students of character". Biography ''Pink ...

* ''M'' (2007 film), made in South Korea * ''M'' (2018 Finnish film), a film directed by Anna Eriksson, loosely inspired by the last days of Marilyn Monroe * ''M'' (2018 Israeli film), a documentary film directed by Yolande Zauberman about child abuse in Bnei Brak * M, an obsolete film rating in the American

Motion Picture Association of America film rating system The Motion Picture Association film rating system is used in the United States and its territories to rate a motion picture's suitability for certain audiences based on its content. The system and the ratings applied to individual motion pictures ...

* M, films recommended for mature audiences in the Australian Office of Film and Literature Classification *M, the production code for the 1965 ''Doctor Who'' serial '' The Romans'' * The M logo for the Brazilian television network

Manchete Rede Manchete (; lit.: Headline Network; also known as TV Manchete or only Manchete) was a Brazilian television network that was founded in Rio de Janeiro on 5 June 1983 by the Ukrainian-Brazilian journalist and businessman Adolpho Bloch. The ne ...

Print publications

* ''M'' (comic strip), a Norwegian comic strip * ''M'' (John Cage book), a 1973 book by avant garde composer John Cage * ''M'' (Peter Robb book), a 1998 book by Peter Robb about the Italian painter Caravaggio * ''M'' (magazine), a monthly teenage magazine published by Bauer Media Group * '' M: Son of the Century'', a 2018 historical novel by Antonio Scurati

Video games

* M, short for mature, a rating used by the

Entertainment Software Rating Board The Entertainment Software Rating Board (ESRB) is a self-regulatory organization that assigns age and content ratings to consumer video games in the United States and Canada. The ESRB was established in 1994 by the Entertainment Software Asso ...

to denote that a video game contains mature content

Music

Performers

M (band) M was an English new wave and synthpop music project from London, England, led by English musician Robin Scott in the late 1970s and early 1980s. M is most known for the 1979 hit "Pop Muzik", which reached number two in the UK Singles Chart ...

, a British techno-pop project of the artist Robin Scott * Matthieu Chedid, French singer (stage name "-M-") * Lee Min-woo, Korean singer (stage name "M") * Mem Nahadr, American singer and performance artist (stage name "M")

Albums

* ''M'' (John Abercrombie Quartet album), 1981 * ''M'' (Myrkur album), 2015 * ''M'' (Big Bang single album), 2015

Songs

* "M" (song), a 2000 song by Ayumi Hamasaki * "M", a song by Chantal Kreviazuk from her album ''

Colour Moving and Still ''Colour Moving and Still'' is the second studio album by Canadian singer and songwriter Chantal Kreviazuk. It was released on October 5, 1999, by Columbia Records. A special edition of the album is also available with a bonus disc. An edition of ...

'' * "M", a song by The Cure from their 1980 album ''

Seventeen Seconds ''Seventeen Seconds'' is the second studio album by English rock band the Cure, released on 18 April 1980 by Fiction Records. The album marked the first time frontman Robert Smith co-produced with Mike Hedges. After the departure of original ba ...

'' * "M", a song by Princess Princess from the 1989 album ''

Diamonds Diamond is a solid form of the element carbon with its atoms arranged in a crystal structure called diamond cubic. Another solid form of carbon known as graphite is the chemically stable form of carbon at room temperature and pressure, b ...

'' * "M's" (song), a 2015 song by ASAP Rocky

Other uses

M Resort M Resort Spa Casino is a boutique hotel, spa, and casino in Henderson, Nevada. It is owned by Gaming and Leisure Properties and operated by Penn Entertainment. The property includes a casino and a 16-story tower with 390 rooms. The M Resort i ...

, a hotel-casino in Las Vegas, Nevada, U.S. * M-Source, a hypothetical source document for the Gospel of Matthew *

Moderaterna The Moderate Party ( sv, Moderata samlingspartiet , ; M), commonly referred to as the Moderates ( ), is a liberal-conservative political party in Sweden. The party generally supports tax cuts, the free market, civil liberties and economic liber ...

, a Swedish political party * Baby M, subject of a famous child custody battle * , the

International Phonetic Alphabet The International Phonetic Alphabet (IPA) is an alphabetic system of phonetic transcription, phonetic notation based primarily on the Latin script. It was devised by the International Phonetic Association in the late 19th century as a standa ...

symbol for a

voiced bilabial nasal The voiced bilabial nasal is a type of consonantal sound used in almost all spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is , and the equivalent X-SAMPA symbol is m. The bilabial nasal occurs in ...

sound * М, a letter of the Cyrillic alphabet *

M-ratio In no-limit or pot-limit poker, a player's M-ratio (also called "M number", "M factor"PokerGreed.com: Understand what hands to play in a tournamen Accessed 2008-03-25 or just "M") is a measure of the health of a player's chip stack as a function ...

, a measure of the health of a player's chip stack in poker * \m/, a common way of typing

corna The sign of the horns is a hand gesture with a variety of meanings and uses in various cultures. It is formed by extending the index and little fingers while holding the middle and ring fingers down with the thumb. Religious and superstit ...

or devil's horns * ''m'', contraction of ''am'', part of the English copular verb ''

to be In linguistics, a copula (plural: copulas or copulae; abbreviated ) is a word or phrase that links the subject of a sentence to a subject complement, such as the word ''is'' in the sentence "The sky is blue" or the phrase ''was not being'' i ...

'' * M, the symbol for the old German currency

German gold mark The German mark (german: Goldmark ; sign: ℳ) was the currency of the German Empire, which spanned from 1871 to 1918. The mark was paired with the minor unit of the pfennig (₰); 100 pfennigs were equivalent to 1 mark. The mark was on the g ...

* m, the masculine

grammatical gender In linguistics, grammatical gender system is a specific form of noun class system, where nouns are assigned with gender categories that are often not related to their real-world qualities. In languages with grammatical gender, most or all nouns ...

* m or M, the

male Male (symbol: ♂) is the sex of an organism that produces the gamete (sex cell) known as sperm, which fuses with the larger female gamete, or ovum, in the process of fertilization. A male organism cannot reproduce sexually without access to ...

gender * M., the abbreviation for

Monsieur ( ; ; pl. ; ; 1512, from Middle French , literally "my lord") is an honorific title that was used to refer to or address the eldest living brother of the king in the French royal court. It has now become the customary French title of resp ...

* M., the regnal year abbreviation for

Mary I of England Mary I (18 February 1516 – 17 November 1558), also known as Mary Tudor, and as "Bloody Mary" by her Protestant opponents, was Queen of England and Ireland from July 1553 and Queen of Spain from January 1556 until her death in 1558. Sh ...

following her marriage to Philip II of Spain * m., married * m. or man., an abbreviation for the Azerbaijani manat (currency) * 𝕸, the

Masoretic Text The Masoretic Text (MT or 𝕸; he, נֻסָּח הַמָּסוֹרָה, Nūssāḥ Hammāsōrā, lit. 'Text of the Tradition') is the authoritative Hebrew and Aramaic text of the 24 books of the Hebrew Bible (Tanakh) in Rabbinic Judaism. ...

, the authoritative Hebrew text of the Tanakh * Mike, the military time zone code for UTC+12:00