• synonyms


[ji-joo-nuh m]
noun Anatomy.
  1. the middle portion of the small intestine, between the duodenum and the ileum.
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Origin of jejunum

1350–1400; Middle English < Latin jējūnum, noun use of neuter of jējūnus empty, poor, mean; so called because thought to be empty after death
Related formsje·ju·nal, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for jejunal

Historical Examples of jejunal

  • The proximal (jejunal) set of these convolutions occupy the upper and left part of the abdominal cavity.

    The Anatomy of the Human Peritoneum and Abdominal Cavity

    George. S. Huntington

British Dictionary definitions for jejunal


  1. the part of the small intestine between the duodenum and the ileum
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Derived Formsjejunal, adjective

Word Origin for jejunum

C16: from Latin, from jējūnus empty; from the belief that the jejunum is empty after death
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 jejunal



late 14c., from Latin ieiunum, neuter of ieiunus (see jejune). Translating Greek nestis (Galen). So called because it typically is found empty during dissections, perhaps because it would tend to drain in a body laid on its back.

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Online Etymology Dictionary, © 2010 Douglas Harper

jejunal in Medicine


  1. Relating to the jejunum.
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n. pl. je•ju•na (-nə)
  1. The section of the small intestine between the duodenum and the ileum.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

jejunal in Science


Plural jejuna
  1. The middle part of the small intestine, connecting the duodenum and the ileum.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.