- pars pylorica gastricae
- The region of the stomach at the junction with the duodenum. It is marked by the thickening of circular muscle layers forming the pyloric sphincter to control the opening and closure of the lumen.
Definition from: MeSH via Unified Medical Language System at the National Library of Medicine
- The opening from the vertebrate stomach into the intestine.
Definition from: Merriam-Webster's Medical Dictionary by Merriam-Webster Inc.
See also Understanding Medical Terminology.