Dictionary.com
definitions

mesenteritis

[mes-uh n-tuh-rahy-tis, mez-, mes-en-tuh-, mez-]
noun Pathology.
  1. inflammation of the mesentery.

Origin of mesenteritis

First recorded in 1795–1805; mes- + enteritis
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for mesenteritis

mesenteritis

noun
  1. inflammation of the mesentery
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for mesenteritis
n.

"inflammation of the mesentery," 1802; see mesentery + -itis.

Online Etymology Dictionary, © 2010 Douglas Harper
mesenteritis in Medicine

mesenteritis

[mĕz-ĕn′tə-rī′tĭs]
n.
  1. Inflammation of the mesentery.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.