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Webster 1913 Edition

Noun.

[From

(Chem.)

A dark red crystalline substance, isomeric with and resembling indigo blue, and obtained from isatide and dioxindol.

See also: indín

indin ‎(uncountable)

(organic chemistry) A dark red crystalline substance, isomeric with and resembling indigo blue, and obtained from isatide and dioxindol.