AD (disambiguation)
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AD and Ad may refer to:
- Anno Domini, Latin for "In the Year of (Our) Lord", applied to years in the Julian and Gregorian calendars following 1 BC. Religion-oriented alternative to CE, or Common Era
- Advertisement, the promotion of an item, service, company, and/or idea
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Media and culture
- A. D. (television), a 1985 miniseries concerning early Christian history
- A.D.: New Orleans After the Deluge, a serialized webcomic on SMITH Magazine
- Ad, columnist in the English newspaper, The Saturday Sport (see also International Fanny Magnet)
- AD (band), a Christian rock band from 1984-1988
- AD (finnish band), Acción Directa, a Finnish industrial band.
- AD Music, record label
- Algemeen Dagblad, a Dutch newspaper
- American Dad!, a Fox Network animated program
- Anno Domini (band), a death metal band from Sydney, Australia, who formed at Turramurra High School in c. 2005.
- Anno Domini (gallery), a contemporary art gallery in San Jose, California
- Arrested Development, a Fox Network TV program
- Art director, the administrator in charge of art and design for a magazine or newspaper
- Assistant director, a film crew member who manages various tasks
- "at", "to", or "for", in some Latin phrases (such as ad lib or ad nauseam)
- Athletic director, the administrator of the athletics program, usually at an educational institution
- Academic Decathlon, a United States high school based academic competition
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Politics and history
- Andorra, a small country in the Pyrenees
- .ad, Andorra's ccTLD (Internet Country Code Top Level Domain)
- Andorra's ISO 3166-1 country code
- Action Directe (terrorist group), a French left-wing terrorist group
- Democratic Action (Spanish: Acción Democrática), a Venezuelan social democratic party
- Democratic Alternative (Malta) (Maltese: Alternattiva Demokratika), the Maltese Green party
- Aad (Omani tribe), a destroyed civilization mentioned in the Quran
- Anno Diocletiani, the Era of (Emperor) Diocletian, an alternate year-numbering start date
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Military
- Air defence, anti-aircraft weaponry and systems
- Accidental discharge, the mistaken firing of a firearm
- Active duty, a status of full duty or service, usually referencing full service in the armed forces
- Destroyer Tender (US Navy Hull Classification: AD), support ships to aid the operation of a fleet of destroyers
- The Air Department, part of the British Admiralty
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Science and technology
- Adenovirus, viruses of the family Adenoviridae.
- Alzheimer's disease, a disease leading to the degeneration of neural function and dementia, usually seen in older people
- Active Directory, a component of Microsoft Windows that provides distributed user management and authentication
- Aggregate demand, the total demand curve of an entire economy that is the sum of each individual's demand
- Automatic differentiation, a way to speedily compute derivatives in computer programming
- Axiom of determinacy, a set theory axiom inconsistent with the Axiom of Choice
- Autodynamics, an alternate to special relativity proposed by Ricardo Carezani in physics
- Audio description, a narration track for blind and visually impaired viewers of media such as TV and film
- Administrative domain, a collection of hosts and routers into one network
- Analog Devices, a multinational producer of semiconductor devices.
- Analog-to-digital converter (A/D), a circuit which converts continuous analog signals to discrete digital values
- Active Disassembly, a technology involving specially designed building materials and components which are sturdy yet can easily be decomposed
- Autonomic Dysreflexia, a condition in which "unreachable" parts of the nervous system (for instance, those beneath a damaged spine) malfunction
- Atypical depression, a depression that still allows one to feel positive moods.
- Adamantyl (Ad), an abbreviation in organic chemistry for Adamantyl
- Sharpless asymmetric dihydroxylation, an abbreviation in organic chemistry for Sharpless asymmetric dihydroxylation
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Transportation
- Airworthiness Directive, requirements on legal usage of airplanes given by the FAA
- Air Paradise (IATA code: AD), a defunct Indonesian airline
- Atlantic & Danville (AAR reporting mark: AD), a defunct railway acquired by the (also now defunct/merged) Norfolk, Franklin and Danville Railway
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People
- Ad Tak, Dutch cyclist
- Adalius Thomas, football player
- Antonio Davis, basketball player
- Antonio Daniels, basketball player
- Adrian Peterson, football player, for "All Day"
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Other
- Associate's Degree, an academic degree
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