Synonym: A.D., AD, advert, advertisement, advertising, advertizement, advertizing, anno Domini. Similar words: ed., a, add, ah, aid, and, as, at. Meaning: [æd] 
n. a public promotion of some product or service. adv. in the Christian era; used before dates after the supposed year Christ was born.
n. a public promotion of some product or service. adv. in the Christian era; used before dates after the supposed year Christ was born. 
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(31) The problem would be repeated ad infinitum.
(32) Television sports commentators repeat the same phrases ad nauseam.
(33) This cycle repeats itself ad infinitum.
(34) He placed a lonely hearts ad in a magazine.
(35) I spoke from the pulpit ad lib.
(36) You cannot stay here ad infinitum without paying rent.
(37) Points of policy are decided ad hoc.
(38) She replied to a lonely hearts ad.
(39) It said in the job ad that they wanted proficiency in at least two languages.
(40) Middle English was spoken from about AD 1100 to 1450.
(41) Having suffered grievously from biological weapons attacks in the past, China supports work that helps comprehensively to strengthen the effectiveness of the convention. It has actively participated in the work of drawing up a Protocol of the Ad Hoc Group of States Parties to the BWC established in 1994,(http://sentencedict.com/ad.html) and has made contributions to the progress of the negotiations on the Protocol.
(42) The speech was full of ad - libs and witty asides.
(43) This ad pulled better than any other we have run.
(44) He talks ad nauseam about how clever his children are.
(45) In AD 79 the city of Pompei was buried under a layer of ash seven metres deep.
(46) She took out a full-page ad in a women's magazine.
(47) Why don't you put an ad in the local paper?
(48) Look[sentencedict.com], we've been over this ad nauseam. I think we should move on to the next item.
(49) The ad glamorized life in the army, emphasizing travel and adventure.
(50) The meetings will be held on an ad hoc basis.
(51) He at last left Mecca on a night in AD 1728.
(52) It seems reasonable to assume that the book was written around 70 AD.
(53) The judge enjoined Varityper from using the ad in any way.
(54) He's probably narked because he didn't see the ad himself.
(55) The Roman Empire was divided in the fourth century AD.
(56) Ad lib is an abbreviation of the Latin phrase "ad libitum".
(57) You cannot stay here ad infinitum without paying any rent.
(58) A seven-day TV ad campaign could swallow up the best part of ￡50,000.
(59) I never use a script; I just ad lib the whole programme.
(60) Alaric the Goth advanced toward Rome, which he sacked in AD 410.