The Collaborative International Dictionary
Mesorectum
Mesorectum \Mes`o*rec"tum\, n. [Meso- + rectum.] (Anat.) The fold of peritoneum, or mesentery, attached to the rectum. -- Mes`o*rec"tal, a.
Wiktionary
mesorectum
n. (context anatomy English) The fold of peritoneum, or mesentery, attached to the rectum.