corrugate

Meanings

1. 1
   verb

   to form a material into parallel ridges, folds, or grooves

   Manufacturers corrugate the cardboard to make the package stronger.

From Latin corrugare 'to wrinkle,' formed from com- 'together' + ruga 'wrinkle or crease.' English first used the word for wrinkling or folding a surface; the industrial sense now commonly refers to ridged metal or cardboard.

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