duodenum Meaning, Definition & Usage

  1. noun the part of the small intestine between the stomach and the jejunum

WordNet

Du`o*de"num noun
Etymology
NL., fr. duodeni twelve each: cf. F. duodenum. So called because its length is about twelve fingers' breadth.
Definitions
  1. (Anat.) The part of the small intestines between the stomach and the jejunum. See Illust. of Digestive apparatus, under Digestive.

Webster 1913