Definitions for ad-

This page provides all possible meanings and translations of the word ad-

Random House Webster's College Dictionary


  1. an advertisement.

  2. advertising:

    an ad agency.

Origin of ad:

1835–45; by shortening


  1. Category: Sport

    Ref: advantage (def. 4). 5

* Tennis..

Origin of ad:

1925–30; by shortening


  1. a prefix occurring in verbs or verbal derivatives borrowed from Latin, where it meant “toward” and indicated direction, tendency, or addition: adjoin. For variants before a following consonant, see a-5, ac-, af-, ag-, al-, an-2, ap-1, ar-, as-, at-.

    Category: Affix

Origin of ad-:

< L ad, ad- (prep. and prefix) to, toward, at, about; c. at1


  1. a suffix occurring in loanwords from Greek denoting a group or unit comprising a certain number, sometimes of years:

    myriad; Olympiad; triad.

    Category: Affix

  2. a suffix meaning “derived from,”“related to,”“associated with,” occurring in loanwords from Greek (dryad; oread) and in New Latin coinages on a Greek model (bromeliad; cycad).

    Category: Affix

  3. a suffix used, on the model of Iliad, in the names of epics, speeches, etc., derived from proper names:

    Dunciad; jeremiad.

    Category: Affix

Origin of -ad:

< Gk -ad-, s. of -as


  1. var. of -ade1:

    ballad; salad.

    Category: Affix


  1. a suffix used in anatomy to form adverbs from nouns signifying parts of the body, denoting a direction toward that part:


    Category: Common Vocabulary, Zoology, Affix

Origin of -ad:

< L ad toward, anomalously suffixed to the noun


or AD

  1. in the year of the Lord; since Christ was born: Charlemagne was born ina.d.742.

    Category: Usage Note

  2. assembly district.

    Category: Government

  3. athletic director.

    Category: Sport

* Usage: The abbreviation a.d. was orig. placed before a date and is still usu. preferred in edited writing: The Roman conquest of Britain began in a.d.43 (or, sometimes, began a.d.43). The abbreviation b.c. (before Christ) is always placed after a date: Caesar was assassinated in 44 b.c. But by analogy with the position of b.c. , a.d. is frequently found after the date in all types of writing: Claudius I lived from 10 54 a.d. This abbreviation may also designate centuries, being placed after the century specified: the second century a.d. Some writers prefer to use c.e. (Common Era) and b.c.e. (Before the Common Era) to avoid the religious overtones of a.d. and b.c.

Origin of A.D.:

L annō Dominī


  1. ad-(Prefix)

    near, at.


  2. ad-(Prefix)

    toward, to, tendency, or addition.


  3. Origin: from the Latin prefix ad-.

Webster Dictionary

  1. Ad-

    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


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