| Acronym | Meaning |
| BRS | Bibliographic Retrieval System |
| CRDL | Contract Required Detection Limit(s) |
| NPA | Natural Population Analysis |
| PHDF | Polyhalogenated Dibenzofuran(s) |
| OHFS | Optimized Hartree-Fock-Slater |
| SAM | Sterile Alpha Motif |
| NADB | National Air Data Branch (US EPA) |
| FEM | Free Electron Model |
| ECDL | External-cavity Diode Laser |
| SMSX(ALPHA) | Overlapping-sphere Multiple-scattering X(alpha) |