euchroic

Century Dictionary and Cyclopedia

1. In chem., used in the phrase euchroic acid, a dibasic acid forming a white crystalline powder, obtained by heating paramide with alkalis.
2. Noting an acid, a colorless compound, prepared, together with paramide, by heating ammonium mellitate. It crystallizes in quadratic prisms which melt and decompose above 250° C.

GNU Webster's 1913

1. adj. (Chem.) Having a fine color.