/ Dictionary / Index E exstrophy: Meaning and Definition of Find definitions for: ex•stro•phy Pronunciation: (ek'stru-fē), [key] — pl. -phies. a birth defect resulting in the eversion of an organ: exstrophy of the bladder. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ex store ext. Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language