Eu`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.

 

© Webster 1913.

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