| Acronym | Meaning |
| GTP | Guanosine 5'-triphosphate |
| ASHRAE | American Society Of Heating |
| PLC | Phospholipase C |
| IVAP | Intimate Valence Alternation Pairs (bonding Model In Electronic Structure Calcns.) |
| HPL | Human Placental Lactogen |
| PETRA | Plasma Engineering And Technology Research Assembly |
| CAPD | Continuous Ambulatory Peritoneal Dialysis |
| ESARDA | European Safeguards Research And Development Association |
| QD-MBPT | Quasi-degenerate Many-body Perturbation Theory |
| CCSOP | Close-coupling Second-order Potential (in Scattering) |