| Acronym | Meaning |
| NSR | New Source Review |
| SD-POE | Sigma-dependent Pi-orbital Electronegativity Model |
| L2MS | Laser-desorption Laser-ionization Mass Spectrometry |
| AIM | Adiabatic Invariance Method (in Ion-mol. Reactions) |
| DPA | Displacement Per Atom |
| LCN | Light Cracked Naphtha |
| IFCC | International Federation Of Clin. Chem. |
| EHM | Extended Hubbard Model (hamiltonian) |
| FI | Field Ionization |
| PMC | Permanently Manned Capability (of Space Station) |