AD

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Look up AD in Wiktionary, the free dictionary

AD or ad may stand for:

ad or advertisement, see advertising
ad- prefix
Administrative domain
Air Defence
Andorra, ISO 3166-1 alpha-2 country code
Anno Domini ("In the Year of [Our] Lord"). This year is A.D. 2005.
anni Diocletiani
Assistant Director
Destroyer Tender, US Navy hull classification symbol
Alzheimer's disease
The Air Department of the British Admiralty
The word ad is Latin for "at" or "to" in some phrases taken from Latin.
Norfolk, Franklin and Danville Railway (AAR reporting mark AD)
Microsoft's Active Directory
is the IATA code for Air Paradise
In economics, AD is usually used to represent aggregate demand or aggregate expenditure.
Artium Doctor (Doctor of Arts)
In physics, AD is Ricardo Carezani's theory of Autodynamics.
The Fox Network TV program Arrested Development

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AD

See also: AD, Active Directory, Administrative domain, Admiralty, Advertising, Aggregate demand, Air Department, Air Paradise