Source : Webster's Revised Unabridged Dictionary (1913)

Argentic \Ar*gen"tic\, a. (Chem.)
   Pertaining to, derived from, or containing, silver; -- said
   of certain compounds of silver in which this metal has its
   lowest proportion; as, argentic chloride.

Source : WordNet®

argentic
     adj : relating to compounds in which silver is bivalent