| Acronym | Meaning |
| PCA | Polar Cap Absorption |
| AMS | Accelerator Mass Spectrometry |
| ZAAS | Zeeman Atomic Absorption Spectroscopy |
| PP | Pariser Parr |
| IMHEX | Internally Manifolded Heat Exchanger (molten Carbonate Fuel Cell Design) |
| HERL/MIS | Health Effects Research Laboratory Management Information System |
| SLP | Static Linear Polarization |
| MLD | Median Lethal Dose |
| NETAC | National Effluent Toxicity Assessment Center |
| SRM | Standard Reference Material |