adjective cos·tate \ˈkäˌstāt, -stə̇t\

Definition of costate

  1. :  having ribs: such as a :  having one or more longitudinal ribs or nerves a costate leaf b :  having ridges on the surface a costate shell

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Origin and Etymology of costate

Latin costatus, from costa rib + -atus -ate — more at coast

Seen and Heard

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a brief usually trivial fact

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