Ab

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AB

1.
Nautical, able seaman.
3.
U.S. Air force. Airman Basic.
4.
Alberta, Canada (approved for postal use).
5.
antiballistic; antiballistic missile.

AB

Symbol, Physiology.
a major blood group usually enabling a person whose blood is of this type to donate blood to persons of type AB and to receive blood from persons of type O, A, B, or AB.
Compare ABO system.

Ab

Symbol.
1.
Chemistry, alabamine.
2.
Immunology, antibody.

ab-

a formal element occurring in loanwords from Latin, where it meant “away from”: abdicate; abolition.
Also, a-, abs-.


Origin:
< Latin ab (preposition and prefix) from, away, cognate with Greek apó, Sanskrit ápa, German ab, English of1, off

ab.

2.
Baseball. (times) at bat.

A.B.

1

Origin:
< Neo-Latin, Medieval Latin Artium Baccalaureus

A.B.

2
1.
Nautical, able seaman.
2.
Baseball. (times) at bat. Also, a.b.

abs

[abz]
plural noun Informal.
abdominal muscles.

Origin:
1980–85, Americanism; by shortening

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
Ab (æb)
 
n
a variant of Av

AB
 
abbreviation for
1.  Also: a.b. able-bodied seaman
2.  (in the US) Bachelor of Arts
3.  (esp in postal addresses) Alberta (Canada)
 
symbol for
4.  a human blood type of the ABO group, containing both the A antigen and the B antigen

ab-1
 
prefix
away from; off; outside of; opposite to: abnormal; abaxial; aboral
 
[from Latin ab away from]

ab-2
 
prefix
denoting a cgs unit of measurement in the electromagnetic system: abvolt
 
[abstracted from absolute]

abs (æbz)
 
pl n
informal abdominal muscles

ABS
 
abbreviation for
acrylonitrile-butadiene-styrene: any of a range of tough copolymers used esp for making moulded articles

Av or Ab (æv)
 
n
(in the Jewish calendar) the fifth month of the year according to biblical reckoning and the eleventh month in the civil year, usually falling within July and August
 
[from Hebrew]
 
Ab or Ab
 
n
 
[from Hebrew]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

ab-
prefix, from L. ab-, ab "off, away from," from PIE base *apo- (see apo-).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

Ab abbr.
antibody

ab- 1
pref.
Away from: abaxial.

ab- 2
pref.
Used to indicate an electromagnetic unit in the centimeter-gram-second system: abcoulomb.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Abbreviations & Acronyms
ab
Abkhazian
Ab
antibody
AB
  1. able-bodied [seaman]

  2. about (shortwave transmission)

  3. airbase

  4. airman basic

  5. Alberta

  6. Latin Artium Baccalaureus (Bachelor of Arts)

  7. at bats (baseball)

ab.
  1. about

  2. abbreviation

abs
  1. abdominal muscles

  2. absolute temperature

ABS
  1. American Board of Surgery

  2. Animal Behavior Society

  3. antilock braking system

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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