/ Dictionary / Index E exhaust system: Meaning and Definition of Find definitions for: exhaust' sys"tem Pronunciation: [key] exhaust (def. 13). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. exhaust manifold exhaust velocity Related Content Daily Word Quiz: supercilious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language