D defs.my
Entry 1 sense Webster, 1913

Euthiochroic

· Eu·thi·o·chro·ic · IPA
01 a. Pertaining to, or denoting, an acid so called.
  1. 1.
    Pertaining to, or denoting, an acid so called.(Chem.)
Phrases & compounds
Euthiochroic acid — a complex derivative of hydroquinone and sulphonic (thionic) acid. -- so called because it contains sulphur, and forms brilliantly colored (yellow) salts.