/ Dictionary / Index K Koch: Meaning and Definition of Find definitions for: Koch Pronunciation: (koch for 1 kô&khlig for 2), [key] — n. born 1924, U.S. politician: mayor of New York City since 1977. 1843–1910, German bacteriologist and physician: Nobel prize 1905. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: koch (Thesaurus) Kocaeli Köchel listing Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language