/ Dictionary / Index K Kepler: Meaning and Definition of Find definitions for: Kep•ler Pronunciation: (kep'lur), [key] — n. 1571–1630, German astronomer. a crater in the second quadrant of the face of the moon having an extensive ray system: about 22 miles (35 km) in diameter. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: kepler (Thesaurus) kepi Kepler's laws Related Content Daily Word Quiz: augur Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language