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asymmetry

[ey-sim-i-tree]
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noun
  1. the quality or state of being asymmetric.
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Origin of asymmetry

First recorded in 1645–55, asymmetry is from the Greek word asymmetría lack of proportion. See a-6, symmetry
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for asymmetry

asymmetry

noun
  1. lack or absence of symmetry in spatial arrangements or in mathematical or logical relations
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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 asymmetry

n.

1650s, "want of symmetry or proportion," from Greek asymmetria, noun of quality from asymmetros "having no common measure; disproportionate, unsymmetrical," from a- "not" + symmetros "commensurable" (see symmetry).

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Online Etymology Dictionary, © 2010 Douglas Harper

asymmetry in Medicine

asymmetry

(ā-sĭmĭ-trē)
n.
  1. Disproportion between two or more like parts; lack of symmetry.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.