plural noun

in some especially former classifications
: a subclass of Crustacea coextensive with Cirripedia
adjective or noun

Word History


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

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Dictionary Entries Near Thyrostraca

Cite this Entry

“Thyrostraca.” Dictionary, Merriam-Webster, Accessed 7 Jun. 2023.

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