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Prionodesmacea

plural noun Pri·ono·des·ma·cea \ ˌprīə(ˌ)nōˌdezˈmāsēə ; prīˌänō- , prīˌōnō- \

Definition of Prionodesmacea

in some classifications
: a division of Lamellibranchia comprising comparatively primitive bivalve mollusks that typically have the hinge prionodont and being approximately equal to the combined orders Protobranchia and Filibranchia
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prionodesmacean

noun or adjective
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prionodesmaceous

\-shəs\ adjective

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Origin and Etymology of prionodesmacea

New Latin, from prion- + desm- + -acea

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