| Acronym | Meaning |
| AOVB | Atomic Orbital Valence Bond (molecular Wave Function) |
| MAS | Magic Angle Spinning (solid State NMR) |
| IST | Internal Standardization Technique |
| PELAN | Pulsed Elemental Analysis With Neutrons |
| CORBA | Common Object Request Broker Architecture |
| DOI | Department Of The Interior |
| PCILO | Perturbative Configuration Interaction Using Localized Orbitals |
| R-CNDO/1X | Relativistic Complete Neglect Of Differential Overlap (method) |
| NRO | Natural Reaction Orbital |
| SDSR-CI | Single And Double Excitations From Single Ref. State Function-CI Method |