/ Dictionary / Index R rescue mission: Meaning and Definition of Find definitions for: res'cue mis"sion Pronunciation: [key] mission (def. 12). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. rescue grass re-search Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language