duodenum

du·o·de·num
D2U1O1D2E1N1U1M3
UK/ˌdjuːə(ʊ)ˈdiːnəm/US/ˌduəˈdinəm/US/ˌduˈɑdənəm/

noun

The first part of the small intestine, starting at the lower end of the stomach and extending to the jejunum.

UncommonScrabble 12

Meanings

nounduodenum (plural duodena or duodenums)

plural duodena · plural duodenums

  1. anatomyThe first part of the small intestine, starting at the lower end of the stomach and extending to the jejunum.

    Duodenums were dissected out, fixed and photographed.

    2013, “Retinaldehyde”, in Q. Ashton Acton, editor, Retinoids—Advances in Research and Application, Atlanta, Ga.: ScholarlyEditions, published 2013, →ISBN, page 36
    4 more examples

    From the Stomacke to the very Fundament, are produced the Guts or Inteſtina, which ſerue a little to alter and diſtribute the Chilus, and convey away the excrements. They are divided into ſmall and great, by reason of their ſite and ſubſtance, ſlender or thicker. The ſlender is Duodenum or whole gut, which is next to the ſtomacke, ſome twelue inches long (ſaith Fuſchius.)

    1624, Democritus Junior [pseudonym; Robert Burton], “Dißimilar Parts”, in The Anatomy of Melancholy: […], 2nd edition, Oxford, Oxfordshire: […] John Lichfield and James Short, for Henry Cripps, →OCLC, partition 1, section 1, member 2, subsection 4, page 17

    The Inteſtina tenuia were burnt in many places, but not quite through any where, excepting two or three. […] The length of that which is commonly call'd the Duodenum, was about 4½ Foot.

    1682, A[llan] M[ullen], An Anatomical Account of the Elephant Accidentally Burnt in Dublin, on Fryday, June 17. in the Year 1681. Sent in a Letter to Sir Will[iam] Petty, Fellow of the Royal Society. Together with a Relation of New Anatomical Observations in the Eyes of Animals: Communicated in another Letter to the Honourable R[obert] Boyle, Esq.; Fellow of the Same Society, London: Printed for Sam[uel] Smith, bookseller, at the Prince's Arms in St. Paul's Church-Yard, →OCLC, page 19

    The duodenum receives the chyme from the stomach, and has generally been believed to accomplish the second digestion, or the conversion of chyme into chyle. In the duodenum it meets with the bile, pancreatic and intestinal fluids, loses its acid properties, and becomes alkaline, probably by the agency of the soda of the bile; […]

    1840, Daniel Oliver, “Nutritive Functions”, in First Lines of Physiology; Designed for the Use of Students of Medicine, 2nd edition, Philadelphia, Pa.: Published by Herman Hooker, Corner of Fifth and Chestnut Streets, →OCLC, page 251

    The duodena open into a common pouch just below the entrance of the gall-ducts. The intestine was single from the confluence of the duodena to the termination of the jejunum.

    1872, B[enjamin] Thompson Lowne, Descriptive Catalogue of the Teratological Series in the Museum of the Royal College of Surgeons of England, London: Printed for the College, and Sold by R[obert] Hardwicke, 192 Piccadilly, →OCLC, series II (Abnormal Conditions Affecting the Axis in Animals), class II (Duplicity), subseries VI (In Mammals), subclass II (Homologous Union), page 27, preparation 115

    Synonyms: dodecadactylum, maw-gut

Synonyms & antonyms

nounThe first part of the small intestine, starting at the lower end of the stomach and extending to the jejunum.

Origin

  1. Medieval Latinduodēnum digitōrum“space of twelve digits”
  2. Englishduodenum

From Medieval Latin duodēnum digitōrum (“space of twelve digits”) in reference to its length, from duodēnī (“twelve each”) + digitōrum, genitive plural of digitus (“finger; toe; digit”).

Full word history & related roots →

Translations

Arabic اِثْنَا عَشَرِيّ, عَفْج
  • اِثْنَا عَشَرِيّ (iṯnā ʕašariyy)first part of the small intestine
  • عَفْج (ʕafj)first part of the small intestine
Basque duodeno
  • duodenofirst part of the small intestine
Bengali ডুওডেনাম
  • ডুওডেনাম (ḍuōḍenam)first part of the small intestine
Bulgarian дванадесетопръстник
  • дванадесетопръстник (dvanadesetoprăstnik)first part of the small intestine
Catalan duodè
  • duodèfirst part of the small intestine
Chinese Mandarin 十二指腸 /十二指肠
  • 十二指腸 /十二指肠 (shí'èrzhǐcháng)first part of the small intestine
Czech dvanáctník, dvanácterník
  • dvanáctníkfirst part of the small intestine
  • dvanácterníkfirst part of the small intestine
Danish tolvfingertarm
  • tolvfingertarmfirst part of the small intestine
Dutch twaalfvingerige darm, duodenum
  • twaalfvingerige darmfirst part of the small intestine
  • duodenumfirst part of the small intestine
Esperanto duodeno
  • duodenofirst part of the small intestine
Estonian kaksteistsõrmiksool
  • kaksteistsõrmiksoolfirst part of the small intestine
Finnish pohjukaissuoli
  • pohjukaissuolifirst part of the small intestine
French duodénum
  • duodénumfirst part of the small intestine
German Duodenum, Zwölffingerdarm
  • Duodenumfirst part of the small intestine
  • Zwölffingerdarmfirst part of the small intestine
Greek δωδεκαδάκτυλο
  • δωδεκαδάκτυλο (dodekadáktylo)first part of the small intestine
Hebrew תריסריון
  • תריסריון (tresaryón)first part of the small intestine
Hindi ग्रहणी
  • ग्रहणी (grahṇī)first part of the small intestine
Hungarian patkóbél, nyombél
  • patkóbélfirst part of the small intestine
  • nyombélfirst part of the small intestine
Icelandic skeifugörn
  • skeifugörnfirst part of the small intestine
Indonesian usus dua belas jari, duodenum
  • usus dua belas jarifirst part of the small intestine
  • duodenumfirst part of the small intestine
Irish dúidéineam
  • dúidéineamfirst part of the small intestine
Italian duodeno
  • duodenofirst part of the small intestine
Japanese 十二指腸
  • 十二指腸 (jūnishichō)first part of the small intestine
Korean 십이지장
  • 십이지장 (sibijijang)first part of the small intestine
Latvian divpadsmitpirkstu zarna
  • divpadsmitpirkstu zarnafirst part of the small intestine
Lithuanian dvylikapirštė žarna
  • dvylikapirštė žarnafirst part of the small intestine
Māori pohokauiti, kōpiroiti
  • pohokauitifirst part of the small intestine
  • kōpiroitifirst part of the small intestine
Norwegian Bokmål tolvfingertarm
  • tolvfingertarmfirst part of the small intestine
Persian دوازدهه
  • دوازدهه (davâzdahe)first part of the small intestine
Polish dwunastnica
  • dwunastnicafirst part of the small intestine
Portuguese duodeno
  • duodenofirst part of the small intestine
Romanian duoden
  • duodenfirst part of the small intestine
Russian двенадцатипе́рстная кишка́
  • двенадцатипе́рстная кишка́ (dvenadcatipérstnaja kišká)first part of the small intestine
Slovak dvanástnik
  • dvanástnikfirst part of the small intestine
Spanish duodeno
  • duodenofirst part of the small intestine
Swedish tolvfingertarm, duodenum
  • tolvfingertarmfirst part of the small intestine
  • duodenumfirst part of the small intestine
Tagalog punong-isaw, tokong
  • punong-isawfirst part of the small intestine
  • tokongfirst part of the small intestine
Thai ลำไส้เล็กส่วนต้น
  • ลำไส้เล็กส่วนต้นfirst part of the small intestine
Turkish oniki-parmak bağırsağı, oniki parmak bağırsağı
  • oniki-parmak bağırsağıfirst part of the small intestine
  • oniki parmak bağırsağıfirst part of the small intestine
Ukrainian дванадцятипала кишка
  • дванадцятипала кишка (dvanadcjatypala kyška)first part of the small intestine
Vietnamese tá tràng
  • tá tràngfirst part of the small intestine
Welsh dwodenwm
  • dwodenwmfirst part of the small intestine
Cite this entry
APA

duodenum. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/duodenum

MLA

“duodenum.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/duodenum. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “duodenum,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/duodenum.

Source: duodenum on Wiktionary, CC BY-SA 4.0.