| Acronym | Meaning |
| RDF | Restricted Dirac-Fock (quantum Calcn. Method) |
| PSD | Position Sensitive Detector |
| UAM-IV | Urban Airshed Model Version IV |
| CPI | Chemical Patents Index |
| ADIS | Advanced Drilling Information System [petroleum] |
| HRV | Heart Rate Variability |
| SAGE | Serial Analysis Of Gene Expression |
| CEPEX | Controlled Ecosystem Pollution Experiment |
| AFGP | Antifreeze Glycoprotein |
| MAA | Melanoma-associated Antigen |