| Acronym | Meaning |
| NASA | National Aeronautics And Space Administration |
| GRM | Geopotential Research Mission (USA Satellite) |
| BPC | Blood Platelet Count |
| ECPSSR | Energy-loss Coulomb-repulsion Perturbed-stationary-state Relativistic Theory |
| ARDS | Acute Respiratory Distress Syndrome |
| ETIC | Environmental Teratology Information Center |
| ISCA | Ionization Spectroscopy For Chemical Analysis |
| FSM | Folded-sheet Mesoporous Material |
| ADAP | Angular Distribution Of Annihilating Photons |
| RBA | Refined Born Approximation (for Atom-mol. Collisions) |