Eu*chro"ic (?), a. [Gr. well-colored; well + color.] Chem.
Having a fine color.
Euchroic acid Chem., an organic, imide acid, obtained as a colorless crystalline substance, C12H4N2O8 by heating an ammonium salt of mellitic acid. By reduction it is changed to a dark blue substance (euchrone), -- hence its name.
© Webster 1913.