Cobaltic \Co*balt"ic\ (?; 74), a. [Cf. F. cobaltique.] (Chem.) Pertaining to, derived from, or containing, cobalt; -- said especially of those compounds in which cobalt has higher valence; as, cobaltic oxide. [1913 Webster] {Luteo-cobaltic compounds} (Chem.), an extensive series of complex yellow compounds of ammonia and cobaltic salts. {Roseo-cobaltic compounds} (Chem.), an extensive series of complex red compounds of cobalt and ammonia. Modifications of these are the {purpureo-cobaltic compounds}. [1913 Webster]