Source : Webster's Revised Unabridged Dictionary (1913)

Quadrivalve \Quad"ri*valve\, a. [Quadri- + valve: cf. F.
   quadrivalve.] (Bot.)
   Dehiscent into four similar parts; four-valved; as, a
   quadrivalve pericarp.

Quadrivalve \Quad"ri*valve\, n. (Arch.)
   A door, shutter, or the like, having four folds.