EuchroicEu*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.
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