/ Dictionary / Index E equiprobable: Meaning and Definition of Find definitions for: e•qui•prob•a•ble Pronunciation: (ē"kwu-prob'u-bul, ek"wu-), [key] — adj. equal in probability. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: equiprobable (Thesaurus) equiprobabilism equirotal Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language