Quadrivalence :: Quadrivalence (n.) The quality or state of being quadrivalent; tetravalence.
Quadrivalent :: Quadrivalent (a.) Having a valence of four; capable of combining with, being replaced by, or compared with, four monad atoms; tetravalent; -- said of certain atoms and radicals; thus, carbon and silicon are quadrivalent elements..
Quadrivalve :: Quadrivalve (a.) Dehiscent into four similar parts; four-valved; as, a quadrivalve pericarp..
Quadrivalve :: Quadrivalve (n.) A door, shutter, or the like, having four folds..