Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • transitive v. To take away; deduct.
  • intransitive v. To perform the arithmetic operation of subtraction.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • v. To remove or reduce; especially to reduce a quantity or number

from the GNU version of the Collaborative International Dictionary of English

  • transitive v. To withdraw, or take away, as a part from the whole; to deduct.

from The Century Dictionary and Cyclopedia

  • To withdraw or take away, as a part from a whole; deduct.
  • Synonyms Subtract, Deduct. See deduct.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • v. make a subtraction
  • v. take off or away

Etymologies

Latin subtrahere, subtract- : sub-, sub- + trahere, to draw.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin subtractus, perfect passive participle of subtrahō ("I draw from beneath; withdraw, remove"); from sub ("under") + trahō ("I draw, pull, drag"). (Wiktionary)

Examples

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