| prepyloric | Anterior to or preceding the pylorus; denoting a temporary constriction of the wall of the stomach separating the fundus from the antrum during digestion. (05 Mar 2000) |
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| prepyloric sphincter | A band of circular muscular fibres in the wall of the stomach near the gastroduodenal pylorus. (05 Mar 2000) |
| prepyloric vein | <anatomy, vein> A tributary of the right gastric vein that passes anterior to the pylorus at its junction with the duodenum. Synonym: vena prepylorica, Latarget's vein, Mayo's vein. (05 Mar 2000) |