• WordNet 3.6
    • n pylorus a small circular opening between the stomach and the duodenum
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Webster's Revised Unabridged Dictionary
    • n Pylorus (Anat) The opening from the stomach into the intestine.
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Century Dictionary and Cyclopedia
    • n pylorus In the early church, a doorkeeper; an ostiary (which see).
    • n pylorus In anatomy: The orifice of communication between the stomach and the intestine, by which the contents of the stomach pass into the intestine. It is usually situated on the right-hand side, opposite the cardiac or esophageal orifice, but may closely approximate or be adjoined to the latter. See cut under stomach.
    • n pylorus The fold of mucous membrane, containing muscular fibers, which guards the pyloric orifice, or other contrivance for retarding or opposing the passage of food from the stomach into the intestine.
    • n pylorus The pyloric end or division of the stomach.
    • n pylorus In Hydrozoa, a valvular structure which separates the gastric from the somatic cavity in the siphonophorous hydrozoans.
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Chambers's Twentieth Century Dictionary
    • n Pylorus pi-lō′rus the lower opening of the stomach leading to the intestines
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Webster's Revised Unabridged Dictionary
L., fr. Gr. pylorus, gate keeper; a gate + watcher, guardian
Chambers's Twentieth Century Dictionary
L.,—Gr. pylōrospylē, an entrance, ouros, a guardian.


In literature:

The third case was that of a man of sixty-two with carcinoma of the pylorus.
"Anomalies and Curiosities of Medicine" by George M. Gould
The pylorus, like a pitchfork.
"Gargantua and Pantagruel, Complete." by Francois Rabelais
The pylorus, like a pitchfork.
"Gargantua and Pantagruel, Book IV." by Francois Rabelais
The outer set runs lengthwise from the cardiac orifice to the pylorus.
"A Practical Physiology" by Albert F. Blaisdell
The upper is sometimes taken for the stomach itself; the lower and nether door (as Wecker calls it) is named Pylorus.
"The Anatomy of Melancholy" by Democritus Junior
The lower opening of the stomach is called the pylorus.
"First Book in Physiology and Hygiene" by J.H. Kellogg
I say, George, do you know what the pylorus is?
"From the Housetops" by George Barr McCutcheon
A double ligature should be passed round the oesophagus, and also round the duodenum a few inches below the pylorus.
"Aids to Forensic Medicine and Toxicology" by W. G. Aitchison Robertson
A slight enlargement in the region of the pylorus may represent the glandular region of the adult stomach.
"Development of the Digestive Canal of the American Alligator" by Albert M. Reese
Pylorus: the chylific ventricle.
"Explanation of Terms Used in Entomology" by John. B. Smith