ˌprīə(ˌ)nōˌdezˈmāsēə; prīˌänō-, prīˌōnō- noun plural
Usage: capitalized
Etymology: New Latin, from prion- + desm- + -acea
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
• pri·ono·des·ma·cean | ̷ ̷ ̷ ̷(ˌ) ̷ ̷| ̷ ̷|māshən, ̷ ̷| ̷ ̷ ̷ ̷| ̷ ̷| ̷ ̷ ̷ ̷ noun or adjective
• pri·ono·des·ma·ceous -shəs adjective