( n. pl. )
A division of bivalve shells, including the marine mussels, in which the two adductor muscles are very unequal. See Dreissena, and Illust. under Byssus.
( n. pl. )
A division of bivalve shells, including the marine mussels, in which the two adductor muscles are very unequal. See Dreissena, and Illust. under Byssus.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012