corrugation

[ kawr-uh-gey-shuhn, kor- ]
/ ˌkɔr əˈgeɪ ʃən, ˌkɒr- /

noun

the act or state of corrugating or of being corrugated.
a wrinkle; fold; furrow; ridge.

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Origin of corrugation

1520–30; <Medieval Latin corrūgātiōn- (stem of corrūgātiō) a wrinkling. See corrugate, -ion
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for corrugation