American Heritage® Dictionary of the English Language, Fourth Edition
- n. Any of the bivalve mollusks of the class Lamellibranchia, including the clams, scallops, and oysters. Also called pelecypod.
- adj. Of or relating to lamellibranchs.
Century Dictionary and Cyclopedia
- Having lamellate gills; pertaining to the Lamellibranchiata, or having their characters.
- n. One of the Lamellibranchiata, as any ordinary bivalve mollusk. Also lamellibranchiate.
- n. any marine or freshwater bivalve mollusk, of the class Lamellibranchia; includes the clams, scallops and oysters
GNU Webster's 1913
- n. (Zoöl.) One of the Lamellibranchia (also called Pelecypoda). Also used adjectively.
- n. marine or freshwater mollusks having a soft body with platelike gills enclosed within two shells hinged together
- adj. bivalve.
- From New Latin Lāmellibranchia, class name : lamelli- + Latin branchia, gill; see branchia. (American Heritage® Dictionary of the English Language, Fourth Edition)
“Jackson's  work on the mechanical origin of characters in the lamellibranch molluscs.”
These user-created lists contain the word ‘lamellibranch’.
very comprehensive list
of molluscs,who does not like
calamari? hmm yum
100,000 species just in molluscs
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Words I missed when practicing for the Spelling Bee
The list is mainly a vehicle to give some quotations about mollusks, so check the comments.
Looking for tweets for lamellibranch.