| Acronym | Meaning |
| UPS | Uninterrupted Power Systems (for Computer Networks) |
| TPMB | Two-potential-modified Born (approxn. In Inelastic Collisions) |
| KTFPB | Potassium Tetrakis[3 |
| PWSCF | Partial-wave Self-consistent Field |
| PSP | Progressive Supranuclear Palsy |
| LEPC | Local Emergency Planning Committee |
| BATS | Biosphere-Atmosphere Transfer Scheme |
| MOUSE | Modular Oriented Uncertainty System |
| CONTOUR | Comet Nucleus Tour |
| ELCD | Electrolytic Conductivity Detection |