| Acronym | Meaning |
| ROA | Relaxed Orbital Approximation |
| MBRSPT | Many-body Rayleigh-Schroedinger Perturbation Theory |
| MIAME | Minimum Information About A Microarray Experiment |
| IRMPD | Infrared Multiphoton Dissociation |
| CRM | Continuous Radon Monitor |
| MEI | Maximally Exposed Individual |
| EOM | Equations Of Motion Method (green's Function) |
| OPACA | Organotin Paint Control Act Of 1988 (US) |
| CIVA | Charge-induced Voltage Alteration |
| PSEP | Polyhedral Skeletal Electron Pair (for Metal Clusters) |