ad
Noun · AdverbWordNet 3.0
Noun (1)
- a public promotion of some product or serviceSynonyms: advertisementadvertizementadvertisingadvertizingadvert
Adverb (1)
- in the Christian era; used before dates after the supposed year Christ was born“in AD 200”Synonyms: A.D.anno Domini
Webster's Dictionary (GCIDE)
Ad- \Ad-\ [A Latin preposition, signifying to. See At.] As a prefix ad- assumes the forms ac-, af-, ag-, al-, an-, ap-, ar-, as-, at-, assimilating the d with the first letter of the word to which ad- is prefixed. It remains unchanged before vowels, and before d, h, j, m, v. Examples: adduce, adhere, adjacent, admit, advent, accord, affect, aggregate, allude, annex, appear, etc. It becomes ac- before qu, as in acquiesce. [1913 Webster]
Free On-line Dictionary of Computing
ad
<networking> The country code for Andorra.
(1999-01-26)
Administrative Domain AD
<networking> (AD) A collection of hosts and routers, and the interconnecting network(s), managed by a single administrative authority.
(1994-11-24)