| Acronym | Meaning |
| NAS | Naval Air Station |
| AIDJEX | Arctic Ice Dynamics Joint Experiment |
| IMHEX | Internally Manifolded Heat Exchanger (molten Carbonate Fuel Cell Design) |
| PEFR | Peak Expiratory Flow Rate (lung Function) |
| OWEC | Office Of Wastewater Enforcement And Compliance |
| SORP | Southern Oxidants Research Program |
| WSD | Water Saturation Deficit |
| PELAN | Pulsed Elemental Analysis With Neutrons |
| IAEH | International Association For Environmental Hydrology |
| LCDA MO | Linear Combination Of Donor-acceptor Molecular Orbital Theory |