2 definitions found From WordNet (r) 2.0 [wn]: trivalent adjective: having a valence of three From The Collaborative International Dictionary of English v.0.44 [gcide]: Trivalent \Triv"a*lent\, adjective [Pref. tri- + L. valens, -entis, p. pr. See {Valence}.] (Chem.) Having a valence of three; capable of being combined with, substituted for, or compared with, three atoms of hydrogen; -- said of triad atoms or radicals; thus, nitrogen is trivalent in ammonia.

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