the middle portion of the small intestine, between the duodenum and the ileum.
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 deathRelated formsje·ju·nal, adjective
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for jejunum
Historical Examples of jejunum
Three; that is to say, the Duodenum, the Jejunum, and the Ileon.
In the remaining 19 cases the appearance of the duodenum and jejunum was not recorded, so that it was probably normal.
The duodenum and jejunum presented the appearance of inflammatory hypermia in 12 cases.
The jejunum and ileum are surrounded above and at the sides by the colon.
Those from the right side of the main vessel pass to the duodenum, pancreas, jejunum and ileum.
British Dictionary definitions for jejunum
Derived Formsjejunal, adjective
the part of the small intestine between the duodenum and the ileum
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
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Word Origin and History for jejunum
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.
Online Etymology Dictionary, © 2010 Douglas Harper
n. pl. je•ju•na (-nə)
The section of the small intestine between the duodenum and the ileum.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
The middle part of the small intestine, connecting the duodenum and the ileum.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.