/ Dictionary / Index H Hahn: Meaning and Definition of Find definitions for: Hahn Pronunciation: (hän), [key] — n. 1879–1968, German chemist: Nobel prize 1944. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hahn (Thesaurus) ha-ha Hahnemann Related Content Daily Word Quiz: overture Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language