/ Dictionary / Index S self-propelled: Meaning and Definition of Find definitions for: self-pro•pelled Pronunciation: (self'pru-peld', self"-), [key] — adj. propelled by itself. (of a vehicle) propelled by its own engine, motor, or the like, rather than drawn or pushed by a horse, locomotive, etc. (of a gun or a rocket launcher) having a vehicle as a base. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: self-propelled (Thesaurus) self-pronouncing self-propulsion Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language