AD (''Anno Domini'') is a designation used to label years following 1 BC in the Julian and Gregorian calendars while 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.D. The Bible Continues'' (also known as ''A.D. Kingdom and Empire'') is an American Biblical epic, biblical Dramatic programming, drama television miniseries, based on the Bible, and a sequel to the 2013 miniseries, ''The Bible (miniseries), ...

'', a 2015 biblical drama television miniseries * '' Arrested Development'', an American television sitcom

Music

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

Publications

* '' A.D.: New Orleans After the Deluge'', a nonfiction graphic novel about Hurricane Katrina * '' Algemeen Dagblad'', a Dutch newspaper * ''

Architectural Digest ''Architectural Digest'' 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, which also publishes internati ...

,'' an interior design and landscaping magazine *

AD (poem) AD is a poem by the American poet Kenneth Fearing, written in 1938 and published in 1956 in ''New and Collected Poems'' by the Indiana University Press.Meyer, Michael. The Bedford Introduction to Literature. 11th ed., Bedford/St. Martin’s, 2016. ...

, by Kenneth Fearing

Other art, entertainment, and media

* Audio description track, a narration track for visually impaired consumers of visual media

Brands and enterprises

* Alexander Dennis, 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 semiconductor company specializing in data conversion, signal processing and power management technology, headquartered in Wilmington, Massachusetts. The co ...

, a semiconductor company

Military

* Accidental discharge, a mechanical failure of a firearm causing it to fire * Active duty, a status of full duty or service, usually in the armed forces *

Air defense Anti-aircraft warfare, counter-air or air defence forces is the battlespace response to aerial warfare, defined by NATO as "all measures designed to nullify or reduce the effectiveness of hostile air action".AAP-6 It includes surface based, ...

, anti-aircraft weaponry and systems * Air Department, part of the British Admiralty * Destroyer tender, a type of support ship (US Navy hull classification symbol AD) * AD Skyraider, former name of the Douglas A-1 Skyraider, a Navy attack aircraft

Organizations

Action Directe ''Action Directe'' (; AD, "direct action") was a French far-left militant group which committed a series of assassinations and violent attacks in France between 1979 and 1987. Members of Action directe considered themselves libertarian commu ...

, French far-left militant group * Democratic Action (Venezuela) (Spanish: ''Acción Democrática''), social democratic and center-left political party * Democratic Alliance (Portugal) (Portuguese: ''Aliança Democrática''), a former centre-right political alliance * Democratic Alternative (Malta) (Maltese: ''Alternattiva Demokratika''), a green political party

People

* Ad (name), 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) is an American professional basketball player for the Los Angeles Lakers of the National Basketball Association (NBA). He plays the power forward and center positions. Davis is an eight-time NB ...

(born 1993), American basketball player * Antonio Davis (born 1968), American basketball player *

A. D. Loganathan Major General Arcot Doraiswamy Loganadan (12 April 1888 – 9 March 1949) was an officer of the Indian National Army, and a minister in the Azad Hind Government as a representative of the Indian National Army. He also served briefly as their ...

(1888–1949), officer of the Indian National Army *

A. D. Whitfield A. B. Whitfield, Jr. (born September 2, 1943) was a former American football running back in the National Football League for the Dallas Cowboys and Washington Redskins. He played college football at the University of North Texas. Early yea ...

(born 1943), American football player *

A. D. Winans Allan Davis Winans (born January 12, 1936, in San Francisco, California), known as A. D. Winans, is an American poet, essayist, short story writer and publisher. Born in San Francisco, California, he returned home from Panama in 1958, after ser ...

(born 1936), American poet, essayist, short story writer and publisher * A.D., nickname of Adrian Peterson (born 1985), American football player

Places

* AD, ISO 3166-1 country for Andorra *

Abu Dhabi Abu Dhabi (, ; ar, أَبُو ظَبْيٍ ' ) is the capital and second-most populous city (after Dubai) of the United Arab Emirates. It is also the capital of the Emirate of Abu Dhabi and the centre of the Abu Dhabi Metropolitan Area. ...

, capital of the United Arab Emirates * AD, herbarium code for the State Herbarium of South Australia

Professions

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

, for a magazine or newspaper *

Assistant director The role of an assistant director 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 to tak ...

, a film or television crew member * Athletic director, the administrator of an athletics program

Science and technology

Biology and medicine

* Addison's disease, 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 the ...

, viruses of the family ''Adenoviridae'' *

Alzheimer's disease Alzheimer's disease (AD) is a neurodegeneration, neurodegenerative disease that usually starts slowly and progressively worsens. It is the cause of 60–70% of cases of dementia. The most common early symptom is difficulty in short-term me ...

, a neurodegenerative disease * Anaerobic digestion, processes by which microorganisms break down biodegradable material * Anti-diarrheal, medication which provides symptomatic relief for diarrhea *

Approximate digestibility The efficiency of conversion of ingested food to unit of body substance (ECI, also termed "growth efficiency") is an index measure of food fuel efficiency in animals. The ECI is a rough scale of how much of the food ingestion, ingested is converted ...

, 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 (dermatitis). It results in puritis, itchy, red, swollen, and cracked skin. Clear fluid may come from the affected areas, which often thickens o ...

, form of skin inflammation * Atypical depression, 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 effect of a different variant of the same gene on the other copy of the chromosome. The first variant is termed dominant and t ...

, a classification of genetic traits *

Autonomic dysreflexia Autonomic dysreflexia (AD) is a potential medical emergency classically characterized by uncontrolled hypertension and bradycardia, although tachycardia is known to commonly occur. AD occurs most often in individuals with spinal cord injuries with ...

, a potential medical emergency

Chemistry

* Adamantyl, abbreviated "Ad" in organic chemistry * Sharpless asymmetric dihydroxylation, a type of organic chemical reaction

Computing

.ad .ad is the Internet country code top-level domain (ccTLD) for Andorra. It is administered by Andorra Telecom. Because .ad is also an abbreviation for the word advertisement or advert, .ad has also been used in an unconventional manner as a do ...

, the top level domain for Andorra * Administrative distance, a metric in routing * Active Directory, 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 'AdminD ...

, a computer networking facility * Analog-to-digital converter, a type of electronic circuit * Automatic differentiation, 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 (link will display the full calendar) 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 ...

Mathematics

* Adjoint representation of a Lie group, abbreviated "Ad" in mathematics * Axiom of determinacy, a set theory axiom

Physics

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

Other uses in science and technology

Active Disassembly Active Disassembly (AD) is a developing technology which is associated with the term Active Disassembly using Smart Materials (ADSM) Outline Smart materials such as shape memory alloys (SMA) are now offering the possibility of allowing complex i ...

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

Transportation

* AD, IATA code for: **

Air Paradise Air Paradise International was an airline based in Denpasar, Bali, Indonesia. It operated services to destinations in Australia, South Korea and Taiwan, from its main base at Ngurah Rai Airport, Denpasar. On 1 December 2005, the airline announced ...

, a defunct Indonesian airline **

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

* Airworthiness Directive, an aircraft maintenance requirement notice

Other uses

* ʿĀd, an ancient Arab tribe, mentioned in the Quran *

Aggregate demand In macroeconomics, 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 ...

, in macroeconomics *

Anno Diocletiani The Era of the Martyrs ( la, anno martyrum), also known as the ''Diocletian era'' ( la, anno Diocletiani), is a method of numbering years used by the Church of Alexandria beginning in the 4th century AD/CE and by the Coptic Orthodox Church of ...

, an alternative year numbering system * United States Academic Decathlon, a high school academic competition