1.a. Pertaining to, or denoting, an acid so called.
Medical Definition of Euthiochroic
1. Pertaining to, or denoting, an acid so called.
Euthiochroic acid, a complex derivative of hydroquinone and sulphonic (thionic) acid. So called because it contains sulphur, and forms brilliantly coloured (yellow) salts.
Origin: Gr. Well + sulphur + colour.
Source: Websters Dictionary
(01 Mar 1998)
