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integer

[in-ti-jer]
noun
  1. Mathematics. one of the positive or negative numbers 1, 2, 3, etc., or zero.Compare whole number.
  2. a complete entity.
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Origin of integer

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 formsnon·in·te·ger, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for non-integer

integer

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
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Word Origin for integer

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

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).

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Online Etymology Dictionary, © 2010 Douglas Harper

non-integer in Science

integer

[ĭntĭ-jər]
  1. A positive or negative whole number or zero. The numbers 4, -876, and 5,280 are all integers.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.