Source : Webster's Revised Unabridged Dictionary (1913)

Divalent \Div"a*lent\, a. [Pref. di- + L. valens, valentis, p.
   pr. See {Valence}.] (Chem.)
   Having two units of combining power; bivalent. Cf. {Valence}.

Source : WordNet®

divalent
     adj : having a valence of two or having two valences [syn: {bivalent}]