| Acronym | Meaning |
| UOP | Universal Oil Products |
| FMM | Fast Multipole Method (algorithm For Coulomb Interactions Among Charge Distributions) |
| NSE | Neutron Spin Echo |
| DWPE | Distorted-wave (with) Polarization (and) Exchange |
| MEE | Migration-enhanced Epitaxy |
| EUMAC | European Modeling Of Atmospheric Constituents |
| AECB | Acute Exacerbations Of Chronic Bronchitis |
| PDGFR | Platelet-derived Growth Factor Receptor |
| GCR | Galactic Cosmic Rays (spacecraft Orbit) |
| RLV | Reusable Launch Vehicles (aeronautics) |