| Acronym | Meaning |
| AIMD | Ab Initio Molecular Dynamics |
| DAB | Dipole Adapted Basis (wave Function) |
| EBT | Extended Brillouin Theorem |
| IBI | Index Of Biotic Integritypar |
| RECLAIM | Regional Clean Air Incentives Market |
| HFPD | Hartree-Fock With Proper Dissociation (wave Function) |
| SED | Surface-conduction Electron-emitter Display |
| PDF | Planar Deformation Feature |
| MCR | Mutual Climate Range |
| LPED | Low-pressure Electric Discharge |