thioindigoid dye

variants: or less commonly thioindigoid

Definition of thioindigoid dye

: any of a class of vat dyes characterized by the same chromophore as indigo (see indigo sense 1b) but with sulfur instead of an imino group as an auxochrome — compare indigoid dye

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Cite this Entry

“Thioindigoid dye.” Dictionary, Merriam-Webster, Accessed 3 Dec. 2020.

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