Ab

[ahb, ahv]

Ab

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

AB

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

AB

Symbol, Physiology.
  1. 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.

abs

[abz]
plural noun Informal.
  1. abdominal muscles.

Origin of abs

An Americanism dating back to 1980–85; by shortening

ab.

  1. about.
  2. Baseball. (times) at bat.

ab-

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

Origin of ab-

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

A.B.

1

Origin of A.B.

1
< New Latin, Medieval Latin Artium Baccalaureus

A.B.

2
  1. Nautical. able seaman.
  2. Baseball. (times) at bat.Also a.b.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for ab

Contemporary Examples of ab

Historical Examples of ab

  • A character mentioned in the Mabinogion, goes by the name of Gwyddneu ab Llwydau.

    Y Gododin

    Aneurin

  • Arthwys son of Ceneu ab Coel was too early for the battle of Cattraeth.

    Y Gododin

    Aneurin

  • Sabbataï had been born on the ninth of Ab—on the great Black Fast.

  • Ab, you are in as big a hurry to git thar as any of us,” said another.

    Rodney, the Ranger

    John V. Lane

  • Wal, sir, I've heerd yer from the North, and I'd like to know if yer an ab'lishener.

    Among the Pines

    James R. Gilmore


British Dictionary definitions for ab

Ab

noun
  1. 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
  1. a human blood type of the ABO group, containing both the A antigen and the B antigen

ab-

1
prefix
  1. away from; off; outside of; opposite toabnormal; abaxial; aboral

Word Origin for ab-

from Latin ab away from

ab-

2
prefix
  1. denoting a cgs unit of measurement in the electromagnetic systemabvolt

Word Origin for ab-

abstracted from absolute

abs

pl n
  1. informal abdominal muscles

ABS

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

Word Origin and History for ab

ab-

word-forming element meaning "away, from, from off, down;" from Latin ab-, ab "off, away from," from PIE root *apo- (see apo-). Reduced to a- before -m-, -p-, or -v-; sometimes abs- before -c- or -t-.

abs

n.

colloquial shortening of abdominals, by 1992.

Online Etymology Dictionary, © 2010 Douglas Harper

ab in Medicine

Ab

abbr.
  1. antibody
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.