EuthiochroicEu`thi*o*chro"ic\, a. [Gr. ? well + ? sulphur + ? color.] (Chem.) Pertaining to, or denoting, an acid so called. Euthiochroic acid (Chem.), a complex derivative of hydroquinone and sulphonic (thionic) acid. -- so called because it contains sulphur, and forms brilliantly colored (yellow) salts.
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