/ Dictionary / Index A aftercooler: Meaning and Definition of Find definitions for: af•ter•cool•er Pronunciation: (af'tur-k"lur, äf'-), [key] — n. a device for cooling compressed air or gases to reduce their volume or temperature. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. afterclap afterdamp Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language