| Acronym | Meaning |
| NPSO | Nonpaired Spatial Orbital |
| TENR | Technologically Enhanced Natural Radioactivity |
| GERM | Geochem. Earth Ref. Model |
| GMP | Generalized Moeller-Plesset (perturbation Theory) |
| ADU | Analog-to-digital Unit |
| OD | Order-Disorder (in Mineral Structure) |
| CCMS | Committee On Challenges Of Modern Society (NATO) |
| CSA | Camphorsulfonic Acid |
| LEPS+IDI | London-Eyring-Polanyi-Sato + Ion Dipole Induced [potential] |
| VSM | Variable Screening Model (for Quasimols. And MO Correlation Diagrams) |