| Acronym | Meaning |
| PPKTP | Periodically Poled KTiOPO4 |
| NSSS | National Sewage Sludge Survey |
| GQDPT | Generalized Quasidegenerate Perturbation Theory |
| SNAP | System For Nuclear Auxiliary Power |
| PSD | Photon Stimulated Desorption |
| MOR | Modulus Of Resilience |
| ENC | Effective Nuclear Charge (model For Mol. Property Calcns.) |
| OGWDW | Office Of Ground Water And Drinking Water |
| SMLR | Stepwise Multiple Linear Regression |
| STMT | Superplastic Thermomech. Treatment |