There are multiple definitions:

1. phonocardiogram(English)

   • Cardiology, Diagnostics

2. preconditioned conjugate gradient(English)

3. Primary Care Group(English)

4. Publishers Communication Group(English)

5. Pugionium cornutum Gaertn.(Latin)

   • EAEP, DEP, EEP, WEP
   • Gastroenterology, Therapeutic approaches, Myocyte / muscle
   • https://doi.org…906-021-03395-y

6. primary congenital glaucoma(English)

   • a small subset of glaucoma
   • Tyr, CYP1b1
   • Ophthalmology, Congenital disorders
   • https://doi.org…science.1080095

7. pollen cytoplasmic granule(English)

   • PPGE2, PPPG, LTB4, PG
   • Allergy
   • https://doi.org…imm.2021.05.014