\Mul"ti*valve\, n. [Cf. F. multivalve.] (Zo["o]l.)
Any mollusk which has a shell composed of more than two
pieces.

\Mul"ti*valve\, Multivalvular \Mul`ti*val"vu*lar\, a.
[Multi- + valve, valvular: cf. F. multivalve.]
1. Having many valves.
2. (Zo["o]l.) Many-valved; having more than two valves; --
   said of certain shells, as the chitons.