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Yours, Etc.: Origins and Uses of 8 Sign-Offs

ap-1

1.
variant of ad- before p: appear.

ap-2

1.
variant of apo- before a vowel or h: aphelion.

Ap.

1.
2.
Apothecaries'.
3.

A/P

1.
account paid.
2.
accounts payable.
3.
authority to pay or purchase.
Also, a/p.

a.p.

1.
additional premium.
2.
author's proof.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for AP
  • The AP covered the protest and reported on it by means of a podcast.
British Dictionary definitions for AP

ap

/æp/
prefix
1.
son of: occurring as part of some surnames of Welsh origin: ap Thomas
Word Origin
from Welsh mab son

AP

abbreviation
1.
Air Police
2.
Associated Press

ap-

prefix
1.
a variant of apo- aphelion

a.p.

abbreviation
1.
(obsolete) (in prescriptions, etc) ante prandium
Word Origin
Latin: before a meal
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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Contemporary definitions for AP
Dictionary.com's 21st Century Lexicon
Copyright © 2003-2014 Dictionary.com, LLC
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Word Origin and History for AP

abbreviation of Associated Press, first recorded 1879; the organization was founded May 1848 as co-operative news gathering effort among New York City newspaper publishers covering the war with Mexico.

ap-

form of Latin ad- before words beginning in -p-; see ad-.

patronymic prefix in Welsh names, earlier map "son," cognate with Gaelic mac. Since 17c. merged into surnames (Ap Rhys = Price, Ap Evan = Bevan, etc.).

It is said that a Welshman who evidently was not willing to be surpassed in length of pedigree, when making out his genealogical tree, wrote near the middle of his long array of 'aps' -- "about this time Adam was born." ["Origin and Significance of our Names," "The Chautauquan," Oct. 1887-July 1888]

Online Etymology Dictionary, © 2010 Douglas Harper
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AP in Medicine

ap. abbr.
apothecary

ap- 1
pref.
Variant of ad-.

ap- 2
pref.
Variant of apo-.

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 AP

AP

  1. access point
  2. adjective phrase
  3. advanced placement
  4. airplane
  5. air police
  6. American plan
  7. antipersonnel
  8. aorticopulmonary
  9. Armed Forces Pacific
  10. Associated Press

ap.

apothecary

Ap.

  1. Apostle
  2. April

a.p.

  1. additional premium
  2. author's proof

A/P

  1. account paid
  2. accounts payable
  3. authority to pay
  4. authority to purchase
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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