| Acronym | Meaning |
| RIHRA | Research To Improve Health Risk Assessments Program (US EPA) |
| STERAO | Stratosphere-Troposphere Experiments: Radiation |
| GE-PIXE | Grazing-exit Particle-induced X-ray Emission |
| BTF | Biotransfer Factor |
| CNDO/B | Complete Neglect Of Differential Overlap / Boyd |
| ALMS | Atomic Line Molecular Spectroscopy |
| PSLC | Polymer-stabilized Liquid Crystal |
| MPR | Magnetic Permeability Resonance |
| IWKB | Iterated Wentzel-Kramers-Brillouin |
| ACRE | Automatic Climatological Recording Equipment |