| Acronym | Meaning |
| MCS | Multiple Cloning Site |
| QVB | Quasiempirical Valence Bond (method) |
| PESC | Passivated Emitter Silicon Solar Cell |
| EBDC | Ethylenebis(dithiocarbamate) (fungicide) |
| CCT | Clean Coal Technology |
| OLF | Overland Flow |
| DZRS | Double Zeta Roos-Siegbahn (wave Functions) |
| PEOE | Partial Equalization Of Orbital Electronegativity (model) |
| ETBM | Empirical Tight-binding Method (in Electronic Structure Calcn.) |
| RSE | Relativistic Symmetric Eikonal |