ˌ ̷ ̷ ̷ ̷ˈgāshən noun
( -s )
Etymology: Medieval Latin corrugation-, corrugatio, from Latin corrugatus + -ion-, -io -ion
1. : the act of corrugating or state of being corrugated
2. : a ridge or groove of a corrugated surface
gravel roads with corrugations and potholes
3. : a small furrow used for the distribution of irrigation water