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
pectinacean\ˌpektəˈnäsh(ē)ən\ noun, plural
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Origin and Etymology of pectinacea
New Latin, from Pectin-, Pecten, type genus + -acea
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