Dictionary
cor•ru•ga•tion
Pronunciation: (kôr"u-gā'shun, kor"-), [key]—
n.
1. the act or state of corrugating or of being corrugated.
2. a wrinkle; fold; furrow; ridge.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.