Source : Webster's Revised Unabridged Dictionary (1913)

Multivalve \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.