Trivalent
Pronunciation : Triv"a*lent
Part of Speech : a.
Etymology : [Pref. tri- + L. valens, -entis, p. pr. See Valence.] (Chem.)
Definition : Defn: 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.
Source : Webster's Unabridged Dictionary, 1913