Webster’s Revised Unabridged Dictionary · 1913
Quadrivalve
Quad′ri·valve (kwŏd′rĭ·vălv), a. [Quadri- + valve: cf. F. quadrivalve.] (Bot.) Dehiscent into four similar parts; four-valved; as, a quadrivalve pericarp.
Quad′ri·valve, n. (Arch.) A door, shutter, or the like, having four folds.