/ Dictionary / Index I indigoid: Meaning and Definition of Find definitions for: in•di•goid Pronunciation: (in'di-goid"), [key] — adj. of or pertaining to that group of vat dyes that have a molecular structure similar to that of indigo. —n. an indigoid substance. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. indigo bunting indigo snake Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language