Thyrostraca

plural noun

Thy·​ros·​tra·​ca

thīˈrästrəkə

in some especially former classifications

: a subclass of Crustacea coextensive with Cirripedia

thyrostracan

(ˈ)⸗¦⸗⸗kən

adjective or noun

Word History

Etymology

New Latin, from thyro- (from Greek thyra door, opening) + Greek ostraka, plural of ostrakon shell

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