There are multiple definitions:

1. pulse code(d) modulation(English)

   • FM, FCC
   • Signal analysis
   • https://en.wiki…code_modulation

2. pericentriolar material(English)

   • ORC, RC
   • https://en.wiki…riolar_material

3. phase change memory(English)

   • RAM, SRAM
   • Computing (biomedical), Memory
   • https://en.wiki…e-change_memory

4. protein calorie malnutrition(English)

   • Nutrition, Proteins / proteomics

5. partial credit model(English)

   • used for examining data–model fitting
   • BRS
   • Model(ing)
   • https://doi.org…000000000004508

6. prolonged cardiac monitoring(English)

   • it is found that the frequency of previously undiagnosed asymptomatic paroxysmal AF is much higher than previously recognized
   • AF, MR-proANP, NDAF, PAF, CEM, CS, CVA, ECG, ESUS, ILR, IS, LA, TIA
   • Cardiology, Electrophysiology, Monitoring
   • https://doi.org…acc.2022.01.042
   • https://doi.org…EAHA.123.043665

7. pubococcygeus muscle(English)

   • EAS, IVS, LMA, LP, PRM, PS, PUL, RVF, TFS, USL
   • Gynecology, Myocyte / muscle
   • https://doi.org…-2339-5.50118-X