EUTHIOCHROIC

Eu′thi‐o‐chro″ic (?), a. [] (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.