| Acronym | Meaning |
| BS | Backscattering Spectroscopy |
| HMTA | Hazardous Material Transportation Act |
| CMP | Cytidine 5'-monophosphate |
| RAA | Rigid-atom Approxn. (in Electronic Structure Calcns.) |
| PIGE | Proton Induced Gamma-ray Emission |
| HLAO | High-lying Antibonding Orbital |
| GMP | Generalized Moeller-Plesset (perturbation Theory) |
| PDR | Photodissociation Region |
| ADPT | Auger Depth Profiling Technique |
| HSE | Heat-shock Element |