/ Dictionary / Index G gasser: Meaning and Definition of Find definitions for: gas•ser Pronunciation: (gas'ur), [key] — n. something that is extraordinarily pleasing or successful, esp. a very funny joke. a person or thing that gasses. Gas•ser Pronunciation: (gas'ur), [key] — n. 1888–1963, U.S. physiologist: Nobel prize for medicine 1944. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Gassendi gassing Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language