| Acronym | Meaning |
| SNS | Sympathetic Nervous System |
| GEASIC | Gradient-expansion Approxn. Self-interaction Correction (functional |
| NODS | NASA Ocean Data System |
| CRIS | Cosmic-Ray Isotope Spectrometer |
| TPY | Total Photon Yield |
| HEB | High Efficiency Boiler |
| EMEFS | Eulerian Model Evaluation Field Study |
| MEPC | Marine Environment Protection Committee |
| NEAR | Near Earth Asteroid Rendezvous |
| NBC | Nuclear, Biological And Chemical |