n.
Pronunciation: i- ˌ pi-z ē - ' ä-t ə -m ē , - ˌ p ē -
Function: noun
Etymology: International Scientific Vocabulary episio- vulva (fr. Greek epision pubic region) + -tomy
Date: 1878
: surgical incision of the perineum to enlarge the vaginal opening for obstetrical purposes during the birth process