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subtraction

 [suhb-trak-shuhn]   Origin

sub·trac·tion

   [suhb-trak-shuhn]
noun
1.
an act or instance of subtracting.
2.
Mathematics. the operation or process of finding the difference between two numbers or quantities, denoted by a minus sign (−).
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Origin:
1350–1400; Middle English < Late Latin subtractiōn- (stem of subtractiō) a withdrawing, equivalent to subtract(us) (see subtract) + -iōn- -ion

Related forms
non·sub·trac·tion, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Subtraction is always a great word to know.
So is uniform. Does it mean:
occurring in a manner independent of some variable, parameter or function: a uniform bound
a positive integer that is not divisible without remainder by any integer except itself and 1, with 1 often excluded
LEARN MORE UNUSUAL WORDS WITH WORD DYNAMO...
Collins
World English Dictionary
subtraction (səbˈtrækʃən)
 
—n
1.  the act or process of subtracting
2.  a mathematical operation in which the difference between two numbers or quantities is calculated. Usually indicated by the symbol (--)

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

subtraction
c.1400, "withdrawal, removal," from L.L. subtractionem (nom. subtractio) "a drawing back, taking away," from L. subtractus, pp. of subtrahere "take away, draw off," from sub "from under" + trahere "to pull, draw" (see tract (1)). The mathematical sense is attested from early
EXPAND
15c. The verb subtract is first recorded c.1540.
"Þou most know þat subtraccion is drawynge of one nowmber oute of anoþer nomber." ["The Crafte of Nombrynge," c.1425]
COLLAPSE
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
subtraction   (səb-trāk'shən)  Pronunciation Key 
The operation of finding the difference between two numbers or quantities.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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