| Acronym | Meaning |
| MR-CI-PS | Multireference-CI-perturbatively Selected |
| SS-MR-CC | State-selective Multireference Coupled-cluster |
| IVNAA | In Vivo Neutron Activation Analysis |
| IA/PA | Intermediate Alky./partial Alky. |
| OVD | Optically Variable Device |
| CISS | Constant-initial-state Spectroscopy |
| ADTT | Accelerator Driven Transmutation Technology |
| DFFT | Double Forward Fourier Transformation |
| PFDT | Partial Flow Dilution Tunnel |
| ASF | Augmented-space Formalism (a Generalization Of CPA) |