| Acronym | Meaning |
| GDP | Gross Domestic Product |
| HCCO | Heavy Catalytic Cycle Oil |
| CD | Centrifugal Decoupling Approximation (for Atom-mol.scattering) |
| XGRS | X-ray/gamma-ray Spectrometer |
| ATDC | After Top Dead Center (gasoline And Diesel Engine Timing) |
| MOVS | Molecular Orbital Valence State |
| VCI | Valence Configuration Interaction (wave Function) |
| PWBA-C | Coulomb Corrected Plane Wave Born Approxn. |
| MTAB | Myristyltrimethylammonium Bromide (surfactant) |
| EUSO | Extreme Universe Space Observatory |