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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Other Words from Prionodesmacea

prionodesmacean \ ¦⸗⸗(ˌ)⸗¦⸗¦māshən , ⸗¦⸗⸗¦⸗¦⸗⸗ \ noun or adjective
prionodesmaceous \ -​shəs \ adjective

History and Etymology for Prionodesmacea

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

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