There are multiple definitions:

1. pyeloureteral(English)

   • Nephrology, Urology

2. peptic ulcer(English)

   • occurs in the stomach (gastric) and first portion of the small intestine (duodenal)
   • GU, DU
   • Gastroenterology
   • https://doi.org…-5514-0.00072-5

3. panuveitis(English)

   • involves a high risk of permanent vision loss and should be managed by a skilled rheumatologist as early and as aggressively as possible
   • PP, VKH
   • Ophthalmology, Pediatrics, Rheumatology
   • https://doi.org….1002/acr.24056

4. pulmonary ultrasound(English)

   • IVCD
   • Ultrasound, Pulmonology
   • https://doi.org…JHM.2021.207097

5. polyurethane(English)

   • a plastic material, which exists in various forms. It can be tailored to be either rigid or flexible, and is the material of choice for a broad range of end-user applications
   • Materials science
   • https://www.pol…/en/what-is-it/

6. primary unifocal(English)

   • ER, HER2, PM
   • Oncology, Mammary gland
   • https://doi.org…000000000000483

7. pressure ulcer(English)

   • common and debilitating wound that arise when immobilized patients cannot shift their weight
   • GM, HS, NMES, PUP
   • Wound care, Biophysics
   • https://doi.org…3/ABB-2011-0028

8. perfusion unit(English)

   • arbitrary unit
   • LDI, SIRS, AU
   • Wound care, Medical imaging
   • https://doi.org…rns.2017.08.020

9. positive-unlabelled(English)

   • refers to type of data that corresponds to cases where a subset of the examples are labelled as known positives and, while the rest is unlabelled and comprises both negative and positive examples
   • GO, KEGG, KNN, ML
   • Genomics, Artificial intelligence
   • https://doi.org…med.2024.108999