| Acronym | Meaning |
| BSA | Breathing-sphere Approxn. (for Inelastic Mol. Collisions) |
| LCAS MS | Linear Combination Of Atomic Spinors-molecular Spinors |
| EFGF | Electric Field Gradient Focusing |
| STMAS | Satellite Transition Magic-angle-spinning |
| FED | Field Emission Display |
| MC-SEA | Multichannel Static-exchange Approximation |
| SCWO | Supercritical Water Oxidation |
| CATSAT | Cooperative Astrophysics And Technology Satellite |
| ICACGP | International Commission On Atmospheric Chemistry And Global Pollution |
| TTSS | Type III Secretion System |