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

noun

1. any of a number of synthetic dyes or pigments related in chemical structure to indigo

Word History and Origins

Origin of indigoid¹

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