| Acronym | Meaning |
| MAOI | Monoamine Oxidase Inhibitor |
| PWTF | Plane-wave Translation Factors (in Atom-ion Inelastic Collisions) |
| MTCT | Mother-to-child Transmission |
| CEI | Committee On Environmental Improvement |
| NSCEP | National Service Center For Environmental Publications |
| LOCA | Loss-of-Coolant Accident |
| BHTV | Borehole Televiewers |
| ODUS | Ozone Dynamics UV Spectrometer |
| MMAD | Mass Median Aerodynamic Diameter (aerosol) |
| IMA | Ion Microanalysis |