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Pectinacea

plural noun Pec·ti·na·cea \ ˌpektəˈnāshēə \
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Definition of Pectinacea

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

\ˌpektəˈnäsh(ē)ən\ noun, plural -s

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Origin and Etymology of pectinacea

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

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