Definition of lamellibranch in English:

lamellibranch

noun

  • another term for bivalve
    • ‘These two groups differ in that the branches of the ctenida are connected only by ciliary junctions in filibranchs whereas lamellibranchs have tissue connecting the branches of the ctenida.’
    • ‘One of these is the bivalves (sometimes called pelecypods or lamellibranchs), an important group of bivalved molluscs familiar to all from the numerous shells that litter beaches.’

Origin

Mid 19th century: from modern Latin Lamellibranchia (former class name), from Latin lamella (diminutive of lamina thin plate) + Greek brankhia gills.

Pronunciation:

lamellibranch

/ləˈmeləˌbraNGk/