/ Dictionary / Index R rocket propulsion: Meaning and Definition of Find definitions for: rock'et propul"sion Pronunciation: [key] propulsion of an object by thrust developed by a rocket. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. rocket-propelled rocketry 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