/ Dictionary / Index A achromic: Meaning and Definition of Find definitions for: a•chro•mic Pronunciation: (ā-krō'mik), [key] — adj. colorless; without coloring matter. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: achromic (Thesaurus) achromatous achromobacter Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language