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integer

[in-ti-jer] /ˈɪn tɪ dʒər/
noun
1.
Mathematics. one of the positive or negative numbers 1, 2, 3, etc., or zero.
Compare whole number.
2.
a complete entity.
Synonyms: integral, whole.
Origin
1500-1510
1500-10; < Latin: untouched, hence, undivided, whole, equivalent to in- in-3 + -teg- (combining form of tag-, base of tangere to touch) + -er adj. suffix
Related forms
noninteger, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for non-integer

integer

/ˈɪntɪdʒə/
noun
1.
any rational number that can be expressed as the sum or difference of a finite number of units, being a member of the set …–3, –2, –1, 0, 1, 2, 3…
2.
an individual entity or whole unit
Word Origin
C16: from Latin: untouched, entire, from tangere to touch
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
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Word Origin and History for non-integer

integer

n.

"a whole number" (opposed to fraction), 1570s, from Latin integer (adj.) "whole, complete," figuratively, "untainted, upright," literally "untouched," from in- "not" (see in- (1)) + root of tangere "to touch" (see tangent). The word was used earlier in English as an adjective meaning "whole, entire" (c.1500).

Online Etymology Dictionary, © 2010 Douglas Harper
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non-integer in Science
integer
  (ĭn'tĭ-jər)   
A positive or negative whole number or zero. The numbers 4, -876, and 5,280 are all integers.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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