LuteocobalticLu"te*o*co*balt"ic\, a. (Chem.) Pertaining to, or designating, certain compounds of cobalt having a yellow color. Cf. Cobaltic. Luteocobaltic chloride (Chem.), a brilliant reddish yellow crystalline compound, Co2Cl6(NH3)12, obtained by the action of ammonium chloride on an ammoniacal solution of cobaltic chloride.