AD (''Anno Domini'') is a designation used to label years following 1 BC in the Julian and Gregorian calendars. Ad (advertisement) is a form of marketing communication. AD, A.D. or Ad may also refer to:

Art, entertainment, and media

Film and television

* ''A.D.'' (film), a 2010 animated zombie horror film * ''A.D.'' (miniseries), a 1985 television miniseries set in ancient Rome * '' A.D. The Bible Continues'', a 2015 biblical drama television miniseries * ''

Arrested Development ''Arrested Development'' is an American satire, satirical television sitcom created by Mitchell Hurwitz. It follows the Bluths, a formerly wealthy, dysfunctional family and is presented in a Serial (radio and television), serialized format, inco ...

'', an American television sitcom * ''

Attarintiki Daredi () is a 2013 Indian Telugu-language action comedy film written and directed by Trivikram Srinivas. Produced by Sri Venkateswara Cine Chitra and Reliance Entertainment, the film stars Pawan Kalyan, Samantha and Pranitha Subhash. Nadhiya, Boma ...

'', 2013 Indian film by Trivikram Srinivas *

Audio description Audio description (AD), also referred to as a video description, described video, or visual description, is a form of narration used to provide information surrounding key visual elements in a media work (such as a film or television program, or ...

, a service for visually impaired audience on some TV programs

Music

AD (band) AD was a 1980s Christian rock band, featuring former Kansas (band), Kansas members Kerry Livgren (guitar, Keyboard instrument, keyboard, synthesizers, backing vocals) and Dave Hope (Bass guitar, bass), former Bloodrock member Warren Ham (lead v ...

, a Christian rock band * ''A.D.'' (album), by Solace

Publications

* AD (poem), by Kenneth Fearing * '' A.D.: New Orleans After the Deluge'', a nonfiction graphic novel about Hurricane Katrina * ''

Algemeen Dagblad The ''Algemeen Dagblad'' (; ), also known by its initialism ''AD'' () is a Dutch daily newspaper based in Rotterdam. History and profile ''Algemeen Dagblad'' was founded in 1946. The paper is published in tabloid format and is headquartered i ...

'', a Dutch newspaper * ''

Architectural Digest ''Architectural Digest'' (stylized in all caps) is an American monthly magazine founded in 1920. Its principal subjects are interior design and landscaping, rather than pure external architecture. The magazine is published by Condé Nast ...

,'' an interior design and landscaping magazine

Other art, entertainment, and media

track, a narration track for visually impaired consumers of visual media

Brands and enterprises

Alexander Dennis Alexander Dennis is a British bus manufacturing company based in Larbert, Scotland. The largest bus and coach manufacturer in the United Kingdom, with a 50% market share in 2019, it has manufacturing plants and partnerships in Canada, China, ...

, a British bus manufacturer * ''Akcionersko društvo'' (aкционерско друштво), a Macedonian name for a type of company * ''Aktsionerno drujestvo'' (акционерно дружество), a Bulgarian name for a type of company * ''akcionarsko društvo'' (aкционарско друштво), a Serbian name for a type of company *

Analog Devices Analog Devices, Inc. (ADI), also known simply as Analog, is an American multinational corporation, multinational semiconductor company specializing in data conversion, signal processing, and power management technology, headquartered in Wilming ...

, a semiconductor company

Educational qualifications

Artist diploma An artist diploma (ArtDip or AD) is a non-degree graduate diploma, awarded to music students who demonstrate comprehensive performance skills in voice and/or a musical instrument. Generally consisting of a two- or three-year course of study, prog ...

, a music performance certificate conferred by higher education institutions.

Military

Accidental discharge An unintentional discharge is the event of a firearm discharging (firing) at a time not intended by the user. An unintended discharge may be produced by an incompatibility between firearm design and usage, such as the phenomenon of cooking off a r ...

, a mechanical failure of a firearm causing it to fire *

Active duty Active duty, in contrast to reserve duty, is a full-time occupation as part of a military force. Indian The Indian Armed Forces are considered to be one of the largest active service forces in the world, with almost 1.42 million Active Standin ...

, a status of full duty or service, usually in the armed forces *

Air defense Anti-aircraft warfare (AAW) is the counter to aerial warfare and includes "all measures designed to nullify or reduce the effectiveness of hostile air action".AAP-6 It encompasses surface-based, subsurface (Submarine#Armament, submarine-lau ...

, an anti-aircraft weaponry and systems *

Air Department The Air Department of the British Admiralty (later succeeded by the Air Section and the Air Division) was established prior to World War I by Winston Churchill to administer the Royal Naval Air Service. History In 1908, the British government h ...

, part of the British Admiralty * A US Navy hull classification symbol: Destroyer tender (AD) *

AD Skyraider The Douglas A-1 Skyraider (formerly designated AD before the 1962 unification of Navy and Air Force designations) is an American single-seat attack aircraft in service from 1946 to the early 1980s, which served during the Korean War and Vietnam ...

, former name of the Douglas A-1 Skyraider, a Navy attack aircraft

Organizations

* Action Directe, a French far-left militant group *

Democratic Action (Venezuela) Democratic Action (, AD) is a Venezuelan social democratic and Centre-left politics, centre-left political party established in 1941. The party played an important role in the early years of Venezuelan democracy, leading the government during Ve ...

(), a social democratic and center-left political party *

Democratic Alliance (Portugal, 1979) The Democratic Alliance (, AD) was a centre-right political alliance, in Portugal composed of the Social Democratic Party (Portugal), Social Democratic Party (PSD), CDS – People's Party (CDS–PP) and the People's Monarchist Party (Portugal), Pe ...

(), a former centre-right political alliance *

Democratic Alternative (Malta) Democratic Alternative (), sometimes referred to as AD – The Green Party, was a green political party in Malta. The party was initially founded by a coalition of former Labour Party members and environmental activists in 1989. On 1 August 20 ...

(), a green political party

People

Ad (name) Ad is a first name. It is common in the Netherlands, where it is almost always short for Adrianus or Adriaan. In America it can be short for Adolph, Adam, Addison, and others. People with the first name of Ad include: * Ad Achkar (born 1988), Le ...

, a given name, and a list of people with the name * ‘Ad, great-grandson of Shem, son of Noah *

Anthony Davis Anthony Marshon Davis Jr. (born March 11, 1993), nicknamed "AD" and "the Brow", is an American professional basketball player for the Dallas Mavericks of the National Basketball Association (NBA). Davis, a Power forward (basketball), power f ...

(born 1993), American basketball player * A. D. Loganathan (1888–1949), officer of the Indian National Army * A. D. Whitfield (born 1943), American football player * A. D. Winans (born 1936), American poet, essayist, short story writer and publisher * A.D., nickname of

Adrian Peterson Adrian Lewis Peterson (; born March 21, 1985) is an American former professional football running back who played 15 seasons in the National Football League (NFL). He is widely considered to be one of the greatest running backs in football hist ...

(born 1985), American football player

Places

* AD, ISO 3166-1 country for

Andorra Andorra, officially the Principality of Andorra, is a Sovereignty, sovereign landlocked country on the Iberian Peninsula, in the eastern Pyrenees in Southwestern Europe, Andorra–France border, bordered by France to the north and Spain to A ...

Abu Dhabi Abu Dhabi is the capital city of the United Arab Emirates. The city is the seat of the Abu Dhabi Central Capital District, the capital city of the Emirate of Abu Dhabi, and the UAE's List of cities in the United Arab Emirates, second-most popu ...

, capital of the United Arab Emirates * AD, herbarium code for the

State Herbarium of South Australia The State Herbarium of South Australia, sometimes called the South Australian Herbarium, and having the herbarium code, AD, is located in Adelaide, South Australia. It is one of several State and Commonwealth herbaria in Australia. The Depart ...

Andhra Pradesh Andhra Pradesh (ISO 15919, ISO: , , AP) is a States and union territories of India, state on the East Coast of India, east coast of southern India. It is the List of states and union territories of India by area, seventh-largest state and th ...

, a state in southern India ( HASC code)

Professions

Art director Art director is a title for a variety of similar job functions in theater, advertising, marketing, publishing, fashion, live-action and animated film and television, the Internet, and video games. It is the charge of a sole art director to supe ...

, for a magazine or newspaper *

Assistant director The role of an assistant director (AD) on a film includes tracking daily progress against the filming production schedule, arranging logistics, preparing daily call sheets, checking cast and crew, and maintaining order on the set. They also have ...

, a film or television crew member *

Athletic director An athletic director (commonly "athletics director" or "AD") is an administrator at many American clubs or institutions, such as colleges and universities, as well as in larger high schools and middle schools, who oversees the work of coaches a ...

, the administrator of an athletics program

Science and technology

Biology and medicine

Addison's disease Addison's disease, also known as primary adrenal insufficiency, is a rare long-term endocrine disorder characterized by inadequate production of the steroid hormones cortisol and aldosterone by the two outer layers of the cells of the adr ...

, an endocrine disorder *

Adenovirus Adenoviruses (members of the family ''Adenoviridae'') are medium-sized (90–100 nm), nonenveloped (without an outer lipid bilayer) viruses with an icosahedral nucleocapsid containing a double-stranded DNA genome. Their name derives from t ...

, viruses of the family ''Adenoviridae'' *

Alzheimer's disease Alzheimer's disease (AD) is a neurodegenerative disease and the cause of 60–70% of cases of dementia. The most common early symptom is difficulty in remembering recent events. As the disease advances, symptoms can include problems wit ...

, a neurodegenerative disease *

Anaerobic digestion Anaerobic digestion is a sequence of processes by which microorganisms break down biodegradable material in the absence of oxygen. The process is used for industrial or domestic purposes to Waste management, manage waste or to produce fuels. Mu ...

, processes by which microorganisms break down biodegradable material * Anti-diarrheal, medication which provides symptomatic relief for diarrhea *

Aortic dissection Aortic dissection (AD) occurs when an injury to the innermost layer of the aorta allows blood to flow between the layers of the aortic wall, forcing the layers apart. In most cases, this is associated with a sudden onset of agonizing ches ...

, which occurs when an injury to the innermost layer of the

aorta The aorta ( ; : aortas or aortae) is the main and largest artery in the human body, originating from the Ventricle (heart), left ventricle of the heart, branching upwards immediately after, and extending down to the abdomen, where it splits at ...

allows blood to flow between the layers of the aortic wall, forcing the layers apart * Approximate digestibility, an index measure of the digestibility of animal feed *

Atopic dermatitis Atopic dermatitis (AD), also known as atopic eczema, is a long-term type of inflammation of the skin. Atopic dermatitis is also often called simply eczema but the same term is also used to refer to dermatitis, the larger group of skin conditi ...

, form of skin inflammation *

Atypical depression ''Atypical'' is an American comedy-drama television series created by Robia Rashid for Netflix. The series takes place in Connecticut, and focuses on the life of 18-year-old Samuel "Sam" Gardner ( Keir Gilchrist), who is autistic. The first ...

, a type of depression *

Autosomal dominant In genetics, dominance is the phenomenon of one variant (allele) of a gene on a chromosome masking or overriding the Phenotype, effect of a different variant of the same gene on Homologous chromosome, the other copy of the chromosome. The firs ...

, a classification of genetic traits *

Autonomic dysreflexia Autonomic dysreflexia (AD) is a life-threatening medical emergency characterized by hypertension and cardiac arrhythmias. This condition is sometimes referred to as autonomic hyperreflexia. Most cases of AD occur in individuals with spinal cord ...

, a potential medical emergency

Chemistry

Adamantyl Adamantane is an organic compound with formula C10H16 or, more descriptively, (CH)4(CH2)6. Adamantane molecules can be described as the fusion of three cyclohexane rings. The molecule is both rigid and virtually stress-free. Adamantane is the mo ...

, abbreviated "Ad" in organic chemistry *

Sharpless asymmetric dihydroxylation Sharpless asymmetric dihydroxylation (also called the Sharpless bishydroxylation) is the chemical reaction of an alkene with osmium tetroxide in the presence of a chirality (chemistry), chiral quinine ligand to form a Vicinal (chemistry), vicinal ...

, a type of organic chemical reaction

Computing

* .ad, the top level domain for Andorra *

Administrative distance Administrative distance (AD) or route preference is a number of arbitrary unit assigned to dynamic routes, static routes and directly-connected routes. The value is used in routers to rank routes from most preferred (low AD value) to least pre ...

, a metric in routing *

Active Directory Active Directory (AD) is a directory service developed by Microsoft for Windows domain networks. Windows Server operating systems include it as a set of processes and services. Originally, only centralized domain management used Active Direct ...

, software for the management of Microsoft Windows domains *

Administrative domain An administrative domain is a service provider holding a security repository permitting to easily authenticate and authorize clients with credentials. This particularly applies to computer network security. This concept is captured by the 'Admin ...

, a computer networking facility *

Analog-to-digital converter In electronics, an analog-to-digital converter (ADC, A/D, or A-to-D) is a system that converts an analog signal, such as a sound picked up by a microphone or light entering a digital camera, into a Digital signal (signal processing), digi ...

, a type of electronic circuit *

Automatic differentiation In mathematics and computer algebra, automatic differentiation (auto-differentiation, autodiff, or AD), also called algorithmic differentiation, computational differentiation, and differentiation arithmetic Hend Dawood and Nefertiti Megahed (2023) ...

, a set of computer programming techniques to speedily compute derivatives * AD₁₆, the hexadecimal number equal to decimal number

173 Year 173 ( CLXXIII) was a common year starting on Thursday of the Julian calendar. At the time, it was known as the Year of the Consulship of Severus and Pompeianus (or, less frequently, year 926 ''Ab urbe condita''). The denomination 173 for th ...

Mathematics

Adjoint representation In mathematics, the adjoint representation (or adjoint action) of a Lie group ''G'' is a way of representing the elements of the group as linear transformations of the group's Lie algebra, considered as a vector space. For example, if ''G'' is \m ...

of a Lie group, abbreviated "Ad" in mathematics *

Axiom of determinacy In mathematics, the axiom of determinacy (abbreviated as AD) is a possible axiom for set theory introduced by Jan Mycielski and Hugo Steinhaus in 1962. It refers to certain two-person topological games of length ω. AD states that every game o ...

, a set theory axiom

Physics

Antiproton Decelerator The Antiproton Decelerator (AD) is a storage ring at the CERN laboratory near Geneva. It was built from the Antiproton Collector (AC) to be a successor to the Low Energy Antiproton Ring (LEAR) and started operation in the year 2000. Antiprotons ...

, a device at the CERN physics laboratory * Autodynamics, a physics theory

Other uses in science and technology

* Active disassembly, a technology supporting the cost-effective deconstruction of complex materials

Transportation

* AD, IATA code for: ** Air Paradise, a defunct Indonesian airline **

Azul Brazilian Airlines Azul Linhas Aéreas Brasileiras S/A (''Azul Brazilian Airlines''; or simply Azul) is a Brazilian airline headquartered in Barueri, a suburb of São Paulo. The company's business model is to stimulate demand by providing frequent and affordable ...

* Airworthiness Directive, an aircraft maintenance requirement notice

Other uses

ʿĀd ʿĀd (, ') was an ancient tribe in pre-Islamic Arabia. 'Ad is best known for being mentioned two dozen times in the Quran, often in conjunction with Thamud. Recently, it has been shown that 'Ad was a tribe that existed two millennia ago in the W ...

, an ancient Arab tribe, mentioned in the Quran *

Aggregate demand In economics, aggregate demand (AD) or domestic final demand (DFD) is the total demand for final goods and services in an economy at a given time. It is often called effective demand, though at other times this term is distinguished. This is the ...

, in macroeconomics * Anno Diocletiani, an alternative year numbering system *

United States Academic Decathlon The Academic Decathlon (also called AcDec, AcaDeca or AcaDec) is an annual Student competition, high school academic competition organized by the non-profit United States Academic Decathlon (USAD). The competition consists of seven objective mult ...

, a high school academic competition