NCIt definition : The peritoneal reflection of the superior part of the posterior wall of the vagina,
anterior to the rectum, which is the deepest point of the peritoneal cavity in females.;
Alternative definition : CDISC: An extension of the peritoneum between the uterus and the rectum in females,
which is formally bounded thusly: anteriorly by the uterus and posterior fornix of
the vagina; posteriorly by the rectum; inferiorly by the peritoneal rectovaginal fold.;