: a red vat dye C16H8O2S2 like indigo in chemical structure except for replacement of both imino groups by sulfur atoms
: any of several vat dyes derived from or closely related to thioindigo

Word History


International Scientific Vocabulary thi- + indigo

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Dictionary Entries Near thioindigo

Cite this Entry

“Thioindigo.” Dictionary, Merriam-Webster, Accessed 19 Apr. 2024.

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