/ Dictionary / Index A autochrome: Meaning and Definition of Find definitions for: au•to•chrome Pronunciation: (ô'tu-krōm"), [key] — n. Photog. a material once used for color photography, consisting of a photographic emulsion applied over a multicolored screen of minute starch grains dyed red, green, and blue-violet. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. autocephaly autochthon Related Content Daily Word Quiz: designate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language