noun pro·tegulum \(ˈ)prō+\

Definition of protegulum



  1. :  the embryonic shell of a brachiopod that is biconvex and smooth and has a wide posterior gape

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Origin and Etymology of protegulum

New Latin, from 1pro- + Latin tegulum covering, from tegere to cover + -ulum (neuter of -ulus -ule) — more at thatch

Seen and Heard

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a rounded knoll or a ridge of ice

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