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ad2

[ad] /æd/
noun, Tennis.
1.
advantage (def 5).
2.
ad in, the advantage being scored by the server.
3.
ad out, the advantage being scored by the receiver.
Origin
1945-1950
1945-50; by shortening
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for ad out

ad1

/æd/
noun
1.
short for advertisement

ad2

/æd/
noun (tennis, US & Canadian)
1.
short for advantage Brit equivalent van

ad3

abbreviation
1.
Andorra

AD

abbreviation
1.
(indicating years numbered from the supposed year of the birth of Christ) anno Domini: 70 ad Compare BC
2.
(military) active duty
3.
(military) air defence
4.
Dame of the Order of Australia
Usage note
In strict usage, ad is only employed with specific years: he died in 1621 ad, but he died in the 17th century (and not the 17th century ad). Formerly the practice was to write ad preceding the date (ad 1621), and it is also strictly correct to omit in when ad is used, since this is already contained in the meaning of the Latin anno Domini (in the year of Our Lord), but this is no longer general practice. bc is used with both specific dates and indications of the period: Heraclitus was born about 540 bc; the battle took place in the 4th century bc
Word Origin
(sense 4) Latin: in the year of the Lord
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for ad out

ad

n.

1841, shortened form of advertisement. Long resisted by those in the trade, and denounced 1918 by the president of a national advertising association as "the language of bootblacks, ... beneath the dignity of men of the advertising profession."

Online Etymology Dictionary, © 2010 Douglas Harper
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ad out in Medicine

AD abbr.
Latin auris dextra (right ear)

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Related Abbreviations for ad out

ad

advertisement

AD

  1. active duty
  2. air-dried
  3. Alzheimer's disease
  4. athletic director
  5. average deviation
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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3
3
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