The mesometrium is the mesentery of the uterus. It constitutes the majority of the broad ligament of the uterus, excluding only the portions adjacent to the uterine tube (the mesosalpinx) and ovary (the mesovarium). It is adjacent to the mesosalpinx. The ureter is among the structures found in the mesometrium. ...
• (n.) The fold of the peritoneum supporting the oviduct.
<anatomy> The fold of the peritoneum supporting the oviduct. ... See: Meso-, and Metrium. ... (04 Mar 1998) ... 
(mez″o-) (me″zo-me´tre-әm) the portion of the broad ligament below the mesovarium.
Mes`o·me'tri·um noun [ New Latin See Meso- , and Metrium .] (Anat.) The fold of the peritoneum supporting the oviduct. 
Type: Term Pronunciation: mez′ō-mē′trē-ŭm Definitions: 1. The broad ligament of the uterus, below the mesosalpinx.
The portion of the broad ligament of the uterus which lies beneath the attachment of the ovary and extends to the lateral wall of the pelvis.