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duodenum

[doo-uh-dee-nuh m, dyoo-; doo-od-n-uh m, dyoo-] /ˌdu əˈdi nəm, ˌdyu-; duˈɒd n əm, dyu-/
noun, plural duodena
[doo-uh-dee-nuh, dyoo-, doo-od-n-uh, dyoo-] /ˌdu əˈdi nə, ˌdyu-, duˈɒd n ə, dyu-/ (Show IPA),
duodenums. Anatomy, Zoology
1.
the first portion of the small intestine, from the stomach to the jejunum.
Origin
1350-1400
1350-1400; Middle English < Medieval Latin, by ellipsis from intestīnum duodēnum digitōrum intestine of twelve fingerbreadths, with original genitive plural construed as neuter singular; Latin duodēnī twelve each (here lacking distributive sense)
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for duodenum
  • The duodenum is at first suspended by a mesentery, and projects forward in the form of a loop.
  • The mucus layer, which coats the stomach and duodenum, forms the first line of defense.
  • Severe abdominal pain, with or without evidence of bleeding, may indicate that the ulcer has perforated the stomach or duodenum.
  • The duodenum small bowel and proximal colon are intact and unremarkable.
British Dictionary definitions for duodenum

duodenum

/ˌdjuːəʊˈdiːnəm/
noun (pl) -na (-nə), -nums
1.
the first part of the small intestine, between the stomach and the jejunum
Derived Forms
duodenal, adjective
Word Origin
C14: from Medieval Latin, shortened from intestinum duodenum digitorum intestine of twelve fingers' length, from Latin duodēnī twelve each
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
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Word Origin and History for duodenum
n.

late 14c., from Medieval Latin duodenum digitorium "space of twelve digits," from Latin duodeni "twelve each." Coined by Gerard of Cremona (d.1187), who translated "Canon Avicennae," a loan-translation of Greek dodekadaktylon, literally "twelve fingers long," the intestine part so called by Greek physician Herophilus (c.353-280 B.C.E.) for its length, about equal to the breadth of twelve fingers.

Online Etymology Dictionary, © 2010 Douglas Harper
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duodenum in Medicine

duodenum du·o·de·num (dōō'ə-dē'nəm, dyōō'-, dōō-ŏd'n-əm, dyōō-)
n. pl. du·o·de·nums or du·o·de·na (dōō'ə-dē'nə, dyōō'-, dōō-ŏd'n-ə, dyōō-)
The beginning portion of the small intestine, starting at the lower end of the stomach and extending to the jejunum.


du'o·de'nal (dōō'ə-dē'nəl, dyōō'-, dōō-ŏd'n-əl, dyōō-) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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duodenum in Science
duodenum
  (d'ə-dē'nəm, d-ŏd'n-əm)   
Plural duodena or duodenums
The beginning part of the small intestine, starting at the lower end of the stomach and extending to the jejunum.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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duodenum in Culture
duodenum [(dooh-uh-dee-nuhm, dooh-od-n-uhm)]

The first part of the small intestine, located just below the stomach. (See digestive system.)

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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