[ verb kawr-uh-geyt, kor-; adjective kawr-uh-git, -geyt, kor- ]
/ verb ˈkɔr əˌgeɪt, ˈkɒr-; adjective ˈkɔr ə gɪt, -ˌgeɪt, ˈkɒr- /

verb (used with object), cor·ru·gat·ed, cor·ru·gat·ing.

to draw or bend into folds or alternate furrows and ridges.
to wrinkle, as the skin or face.
Western U.S. to make irrigation ditches in (a field).

verb (used without object), cor·ru·gat·ed, cor·ru·gat·ing.

to become corrugated; undergo corrugation.


corrugated; wrinkled; furrowed.

Origin of corrugate

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


cor·ru·gat·ed, adjectivecor·ru·ga·tor, nounun·cor·ru·gat·ed, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for corrugator (1 of 2)

/ (ˈkɒrʊˌɡeɪtə) /


a muscle whose contraction causes wrinkling of the brow

British Dictionary definitions for corrugator (2 of 2)


verb (ˈkɒrʊˌɡeɪt)

(usually tr) to fold or be folded into alternate furrows and ridges

adjective (ˈkɒrʊɡɪt, -ˌɡeɪt)

folded into furrows and ridges; wrinkled

Derived forms of corrugate

corrugation, noun

Word Origin for corrugate

C18: from Latin corrūgāre, from rūga a wrinkle
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

Medical definitions for corrugator

[ kôrə-gā′tər ]


A muscle that draws the skin together, causing it to wrinkle.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.