| Acronym | Meaning |
| LEPS | London-Eyring-Polanyi-Sato (potential-energy Surface) |
| PEC | Predicted Environmental Concentration |
| PERI | Pharmaceutical Education And Research Institute |
| KSS | Kearns-Sayre Syndrome |
| SBA | Slurry Blasting Agents |
| IAWQ | International Association On Water Quality |
| BAL | Broad Absorption Line |
| PCT | Patent Cooperation Treaty |
| ACIOSA | Adiabatic Capture Infinite Order Sudden Approximation |
| PV-RR | Perturbational-variational-Rayleigh-Ritz (matrix Method In Mol. Calcns.) |