/ Dictionary / Index E Epsom: Meaning and Definition of Find definitions for: Ep•som Pronunciation: (ep'sum), [key] — n. a town in Surrey, SE England, S of London: site of a famous racetrack where the annual Derby is held. 71,100. Official name, Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. epsilon-neighborhood epsomite Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language