| Acronym | Meaning |
| GSAC | Generalized Symmetry Adapted Cluster (theory) |
| CODIS | Combined DNA Index System |
| TCA | Total Constituent Analysis |
| SOMO | Semioccupied Molecular Orbital |
| AMA | American Medical Association |
| FS | Feasibility Study |
| ODU | Optical Density Units |
| RCR | Replication-competent Retrovirus |
| HPW | High Pressure Welding |
| SWAP | Surface Water Acidification Project |