Pectinacea

plural noun

Pec·​ti·​na·​cea

ˌpektəˈnāshēə

: a suborder of Filibranchia comprising active bivalve mollusks that have a fan-shaped shell and no siphons including the typical pectens and related forms

pectinacean

ˌpektəˈnäsh(ē)ən

noun

plural -s

Word History

Etymology

New Latin, from Pectin-, Pecten, type genus + -acea

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