/ Dictionary / Index P propellent: Meaning and Definition of Find definitions for: pro•pel•lent Pronunciation: (pru-pel'unt), [key] — adj. serving or tending to propel or drive forward. —n. a propellant. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: propellent (Thesaurus) propellant propeller Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language