un corrugated

corrugate

[v. kawr-uh-geyt, kor-; adj. kawr-uh-git, -geyt, kor-]
verb (used with object), corrugated, corrugating.
1.
to draw or bend into folds or alternate furrows and ridges.
2.
to wrinkle, as the skin or face.
3.
Western U.S. to make irrigation ditches in (a field).
verb (used without object), corrugated, corrugating.
4.
to become corrugated; undergo corrugation.
adjective
5.
corrugated; wrinkled; furrowed.

Origin:
1375–1425; late Middle English < Latin corrūgātus past participle of corrūgāre, equivalent to cor- cor- + rūg(āre) to wrinkle + -ātus -ate1

corrugated, adjective
corrugator, noun
uncorrugated, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
corrugate
 
vb
1.  (usually tr) to fold or be folded into alternate furrows and ridges
 
adj
2.  folded into furrows and ridges; wrinkled
 
[C18: from Latin corrūgāre, from rūga a wrinkle]
 
corru'gation
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

corrugate
1520s (implied in corrugation), from L. corrugatus, pp. of corrugare "to wrinkle," from com- intens. prefix + rugare "to wrinkle."
Online Etymology Dictionary, © 2010 Douglas Harper
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