Etymology
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asymmetry (n.)
1650s, "want of symmetry or proportion," from Greek asymmetria "want of proportion or harmony," abstract noun from asymmetros "having no common measure; disproportionate, unsymmetrical," from a- "not" (see a- (3)) + symmetros "commensurable" (see symmetry).
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asymmetrical (adj.)
1680s; see asymmetry + -ical. Other forms that have served as an adjective based on asymmetry are asymmetral (1620s), asymmetrous (1660s), and asymmetric (1839); only the last seems to have any general currency. Related: Asymmetrically.
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