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Noun: corrugation  ,kor-u'gey-shun or ,kór-u'gey-shun [N. Amer], ,kó-ru'gey-shun [Brit]
  1. The act of shaping into parallel ridges and grooves
    "The corrugation of the metal roof improved its strength"
     
  2. A ridge on a corrugated surface
    "The corrugations on the metal roof helped to channel rainwater"

Derived forms: corrugations

Type of: change of shape, ridge

Encyclopedia: Corrugation