| Acronym | Meaning |
| OPAL | Omni-Purpose Apparatus At LEP |
| IRBIC | Infrared Beam Induced Current |
| CAROL | Centralized Air Emissions Repository On-Line |
| DLCA | Diffusion Limited Cluster Aggregation |
| AMBIENS | Atmospheric Mass Balance Of Industrially Emitted And Natural Sulfur |
| RDF | Restricted Dirac-Fock (quantum Calcn. Method) |
| PMTDI | Provisional Maximum Tolerable Daily Intake |
| ATRA | All-trans-retinoic Acid |
| TCM | Tunneling Current Microscopy |
| ASEAN | Assocn. Of South-East Asian Nations |