Word Study
isatin
CIDE DICTIONARY
isatin, n. [See Isatis.].
An orange-red crystalline substance, C8H5NO2 , obtained by the oxidation of indigo blue. It is also produced from certain derivatives of benzoic acid, and is one important source of artificial indigo. [1913 Webster]
OXFORD DICTIONARY
isatin, n. Chem. a red crystalline derivative of indole used in the manufacture of dyes.
Etymology
L isatis woad f. Gk
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