/ Dictionary / Index O Onsager: Meaning and Definition of Find definitions for: On•sa•ger Pronunciation: (on'sä-gur, ôn'-), [key] 1903–76, U.S. chemist, born in Norway: Nobel prize 1968. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: onsager (Thesaurus) onrush on-screen Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language