Found 2 items, similar to pentavalent.
English → English (WordNet) Definition: pentavalent pentavalent adj : having a valence of five
English → English (gcide) Definition: Pentavalent Pentavalent \Pen*tav"a*lent\, a. [Penta- + L. valens, p. pr. See Valence.] (Chem.) Having a valence of five; -- said of certain atoms and radicals. [1913 Webster]