mesocolon

[ mez-uh-koh-luh n, mes-, mee-zuh-, -suh- ]

/ ˌmɛz əˈkoʊ lən, ˌmɛs-, ˌmi zə-, -sə- /

the mesentery of the colon.

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First recorded in 1685–95; meso- + colon²

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

The mesocolon retains its primitive attachment to the median line ventrad of the large prevertebral blood vessels.
The Anatomy of the Human Peritoneum and Abdominal Cavity|George. S. Huntington
Adhesion of the mesocolon to the dorsal body wall (parietal peritoneum) does not occur at all points at the same time.
The Anatomy of the Human Peritoneum and Abdominal Cavity|George. S. Huntington
In 14 a mesocolon was found in both the ascending and descending segments of the large intestine.
The Anatomy of the Human Peritoneum and Abdominal Cavity|George. S. Huntington
On the left: right layer of mesocolon (secondary lumbar parietal peritoneum in the adult human subject).
The Anatomy of the Human Peritoneum and Abdominal Cavity|George. S. Huntington

The mesentery and mesocolon are seen in a similar condition, causing wrinkling and shortening of the bowels.
A System of Practical Medicine By American Authors, Vol. II|Various

mesocolon

[ mĕz′ə-kō′lən ]

The fold of peritoneum attaching the colon to the posterior abdominal wall.

mes′o•col′ic (-kŏl′ĭk, -kō′lĭk) adj.