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corrugation

noun cor·ru·ga·tion \ ˌkȯr-ə-ˈgā-shən , ˌkär- \
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Definition of corrugation

1 : the act of corrugating
2 : a ridge or groove of a surface that has been corrugated

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First Known Use of corrugation

1528

in the meaning defined at sense 1

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