Examples from the Web for corrugation
Nor can I imagine now what I may have meant by the "corrugation" on a dish.Mohave Pottery|Alfred L. Kroeber
Small cooking bowl, remarkable for corrugation representing the rising of the boiling waters of a flood.Illustrated Catalogue of the Collections Obtained|James Stevenson
Then the roof, with a nail in every corrugation, in the concaves instead of the convexes, and the mansion wanted but a floor.From Chart House to Bush Hut|Charles W. L. Bryde
During this energetic action the whole fabric is kept in a state of corrugation, and to such extent is rigid.
He perspired violently; the whole of his scalp twitched with the corrugation of his brows.Back o' the Moon|Oliver Onions