| Acronym | Meaning |
| AGN | Active Galactic Nuclei |
| CID | Configuration Interaction With Doubly Excited Configurations |
| MADE | The Macro-Dispersion Test Site |
| AQCCT | Air Quality Criteria And Control Techniques |
| ETBM | Empirical Tight-binding Method (in Electronic Structure Calcn.) |
| FNTS | Fast Neutron Transmission Spectroscopy |
| CVFEM | Control Volume Finite Element Method |
| I-TEF | International Toxicity Equvalency Factor |
| CENP | Centromere-associated Protein |
| RCS | Reaction Control System |