| Acronym | Meaning |
| PIMC | Path-integral Monte-Carlo |
| BPSG | Borophosphosilicate Glass |
| SIMP | Solar Irradiance Monitoring Program |
| EMT | Effective Mass Theory (in Electronic Wave Functions Calcn.) |
| ADF | Adult T-cell Leukemia-derived Factor |
| HKED | Hybrid K-edge Densitometry |
| PESA | Proton Elastic Scattering Anal. |
| PBPK | Physiologically Based Pharmacokinetic |
| PRISM | Power Reactor Innovative Small Module |
| PNC | Parity Nonconservation |