indigoid

indigoid

(ˈɪndɪˌɡɔɪd) adj (Dyeing) of, concerned with, or resembling indigo or its blue colourn (Dyeing) any of a number of synthetic dyes or pigments related in chemical structure to indigo

in•di•goid

(ˈɪn dɪˌgɔɪd)

adj. 1. of or pertaining to the group of vat dyes having a molecular structure similar to that of indigo. n. 2. an indigoid substance. [< German (1908); see indigo, -oid]