/ Dictionary / Index S supercharge: Meaning and Definition of Find definitions for: su•per•charge Pronunciation: (s'pur-chärj"), [key] — -charged, -charg•ing. to charge with an abundant or excessive amount, as of energy, emotion, or tension. to supply air to (an internal-combustion engine) at greater than atmospheric pressure. pressurize (def. 3). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: supercharge (Thesaurus) supercede supercharged Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language