/ Dictionary / Index E episiotomy: Meaning and Definition of Find definitions for: e•pi•si•ot•o•my Pronunciation: (u-pē"zē-ot'u-mē, ep"u-sī-), [key] — pl. -mies. an incision into the perineum and vagina to allow sufficient clearance for birth. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: episiotomy (Thesaurus) episepalous episode Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language