Entry 2 senses · 2 variants Webster, 1913 Quadrivalve · Quad·ri·valve · IPA a. n. 01 a. Dehiscent into four similar parts; four-valved; as, a quadrivalve pericarp. 1. Dehiscent into four similar parts; four-valved; as, a quadrivalve pericarp.(Bot.) 02 n. A door, shutter, or the like, having four folds. 1. A door, shutter, or the like, having four folds.(Arch.)