The Collaborative International Dictionary
Multivalve
Multivalve \Mul"ti*valve\, n. [Cf. F. multivalve.] (Zo["o]l.) Any mollusk which has a shell composed of more than two pieces.
Multivalve
Multivalve \Mul"ti*valve\, Multivalvular \Mul`ti*val"vu*lar\, a.
Having many valves.
(Zo["o]l.) Many-valved; having more than two valves; -- said of certain shells, as the chitons.
Wiktionary
multivalve
a. Having multiple valves (in any context) n. (context zoology English) A multivalve mollusc