| Acronym | Meaning |
| GEOS | Goddard Earth Observing System |
| NOEL | No Observable Effect Level (in Animal Tests) |
| NMRI | Nuclear Magnetic Resonance Imaging |
| OPANA | Operational Version Of The Atm. Mesoscale Numerical Pollution Model |
| PWIA | Plane-wave Impulse Approximation |
| ESSP | Eddy Statistics Scientific Panel |
| LHS | Latin Hypercubic Sampling |
| TAP | Temporal Anal. Of Products |
| CXMS | Conversion X-ray Mossbauer Spectroscopy |
| THEL | Tactical High Energy Laser |