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
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)