| Acronym | Meaning |
| OHD | Optical Heterodyne Detection |
| SMD | Sauter Mean Diameter |
| MLC | Multilayer Ceramic Capacitor |
| DIIMFP | Differential Inverse Inelastic Mean Free Path |
| NCRP | National Council On Radiation Protection |
| BRDF | Bidirectional Reflectance Distribution Function |
| TOCSY | Total Correlation Spectroscopy |
| UAPSP | Utility Acid Precipitation Study Program |
| IBS | Ion Backscattering Spectroscopy |
| IUAM | Independent United Atom Model (in Positron Scattering By Mols.) |