| Acronym | Meaning |
| PAC | Perturbed Angular Correlation |
| GHO | Generalized Hybrid Orbital (ao) |
| RP/M | Reinforced Plastics/mortar |
| RREL | Risk Reduction Engineering Laboratory |
| GCDIS | Global Change Data And Information System |
| PIXE | Particle Induced X-ray Emission |
| LH | Luteinizing Hormone |
| ROSE | Residual Organic Substance Emissions |
| ESD | Equiv. Spherical Diam. |
| LEPS | London-Eyring-Polanyi-Sato (potential-energy Surface) |