MULTIVALVE

Mul"ti*valve, n. Etym: [Cf. F. multivalve.] (Zoöl.)

Definition: Any mollusk which has a shell composed of more than two pieces.

Mul"ti*valve, Mul`ti*val"vu*lar, a. Etym: [Multi- + valve, valvular: cf. F. multivalve.]

1. Having many valves.

2. (Zoöl.)

Definition: Many-valved; having more than two valves; -- said of certain shells, as the chitons.

Source: Webster’s Unabridged Dictionary 1913 Edition