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indigoid

[ in-di-goid ]

adjective

  1. of or relating to that group of vat dyes that have a molecular structure similar to that of indigo.


noun

  1. an indigoid substance.

indigoid

/ ˈɪndɪˌɡɔɪd /

adjective

  1. of, concerned with, or resembling indigo or its blue colour
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


noun

  1. any of a number of synthetic dyes or pigments related in chemical structure to indigo
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word History and Origins

Origin of indigoid1

First recorded in 1905–10; indig(o) + -oid

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