PYLORUS
pylorus
(noun) a small circular opening between the stomach and the duodenum
Source: WordNet® 3.1
Etymology
Noun
pylorus (plural pylori or pyloruses)
(anatomy) The opening in a vertebrate, including humans, at the lower end of the stomach that opens into the duodenum.
A muscular or myovascular structure that controls the opening of an orifice or lumen of an organ.
Synonyms
• pyloric sphincter
Source: Wiktionary
Py*lo"rus, n.; pl. Pylori. Etym: [L., fr. Gr. (Anat.)
(a) The opening from the stomach into the intestine.
(b) A posterior division of the stomach in some invertebrates.
Source: Webster’s Unabridged Dictionary 1913 Edition