| Acronym | Meaning |
| SAR | Synthetic Aperture Radar |
| FIRMR | Federal Information Resources Management Regulations |
| HRELS | High-resolution Electron Energy-loss Spectroscopy |
| MERRF | Myoclonic Epilepsy Associated With Ragged-red Muscle Fibers |
| VEM | Video-enhanced Microscopy |
| CSEM | Coherent Self-energy Method |
| GFAA | Graphite Furnace Atomic Absorption |
| OPO | Optical Parametric Oscillator |
| ETO | Elliptical-type Orbital |
| MBAS | Methylene Blue Active Substance (surfactant) |