Lamellibranchia

plural noun La·mel·li·bran·chia

Definition of Lamellibranchia

  1. :  a class of Mollusca including the clams, oysters, and mussels, having the body bilaterally symmetrical, compressed, and more or less completely enclosed within the mantle that secretes a bivalved shell whose right and left parts are connected by a hinge over the animal's back, having no distinct head, usually two lamelliform gills on each side of the body, and the ventral region differentiated in most of the forms into a muscular plowshare or tongue-shaped foot by means of which the animal burrows or moves about, and having the posterior margins of the mantle lobes drawn out in the burrowing species into tubes through which water passes into and out of the mantle cavity

lamellibranchiate

adjective or noun

Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Join MWU now and get access to America’s largest dictionary, with:

  • 300,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Origin and Etymology of lamellibranchia

New Latin, from lamell- + -branchia


Seen and Heard

What made you want to look up Lamellibranchia? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a rounded knoll or a ridge of ice

Get Word of the Day daily email!