/ Dictionary / Index A atonal: Meaning and Definition of Find definitions for: a•ton•al Pronunciation: (ā-tōn'l), [key] — adj. Music. of, pertaining to, or marked by atonality. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: atonal (Thesaurus) Aton atonalism Related Content Daily Word Quiz: pristine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language