| Acronym | Meaning |
| CVA | Characteristic Vector Analysis |
| FEESP | Field-emitted Electron Spin-polarization |
| ESEDD | Excited State Electron Density Differential Method |
| MUBFF | Modified Urey Bradley Force Field |
| CAI | Conodont Alteration Index |
| IBR | Infectious Bovine Rhinotracheitis |
| CCME | Canadian Council Of Ministers Of The Environment |
| VOA | Variable Optical Attenuator |
| HFFC | Hartree-Fock Frozen Core |
| ECI | Size-extensive CI |