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gyrational

 - 3 dictionary results

gy⋅ra⋅tion

  [jahy-rey-shuhn]
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–noun
the act of gyrating; circular or spiral motion; revolution; rotation; whirling.
Origin:
1605–15; < LL gȳrātiōn- (s. of gȳrātiō). See gyrate, -ion

Related forms:
gy⋅ra⋅tion⋅al, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Word Origin & History

gyration 
1615, from L.L. gyratum, pp. of gyrare, from L. gyrus "circle" (see gyre). Gyrate (v.) is an 1822 back-formation (implied in gyrated).
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: gy·ra·tion
Pronunciation: jI-'rA-sh&n
Function: noun
: the pattern of convolutions of the brain
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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