| Acronym | Meaning |
| ESE | Exact Static-exchange (approxn. In Scattering Calcns.) |
| APCS | Argonne Premium Coal Sample |
| UCM | Unresolved Complex Mixt. |
| HFJ | Hartree-Fock-Jucys (in Electron-correlation Corrections Calcn.) |
| HESI | Health And Environmental Sciences Institute |
| CEQ | Collinear Exact Quantum (method In Reactive-scattering Calcn.) |
| QELS | Quasi-Elastic Light Scattering |
| MSZ | Magnesia-stabilized Zirconia |
| NSAID | Non-steroidal Anti-inflammatory Drug |
| UHC | Unburned Hydrocarbons |