Definition of indigoid in English:

indigoid

adjective

  • (of a dye) related to indigotin in molecular structure.

    • ‘Indigoid dyestuffs are commonly referred to as indigo.’
    • ‘Indigo, the parent compound of the indigoid class of dyes, has been in use as a vat due since before recorded history.’
    • ‘Further oxidation and dimerization of indoxyl produces indigoid pigments.’
    • ‘The present invention relates to a process for preparing from 5 to 60% strength by weight aqueous alkaline solutions of reduced indigoid dyes.’

Pronunciation

indigoid

/ˈindəˌɡoid/