Breadcrumb Home > Dictionary > Index O orchestral: Meaning and Definition of Find definitions for: or•ches•tral Pronunciation: (ôr-kes'trul), [key] — adj. of, pertaining to, or resembling an orchestra. composed for or performed by an orchestra: orchestral works. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: orchestral (Thesaurus) orchestra orchestrate ✖ Related Content Daily Word Quiz: supercilious Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language