| Acronym | Meaning |
| MRSD-CI+P | MRSD-CI (with) Pople Correction |
| CORR | Chemicals On Reporting Rules |
| ICF-CI | Interacting Correlated Fragment-CI (wave Function) (see Also SA-MCSCF) |
| MNSR | Miniature Neutron Source Reactor |
| PWO | Plane Wave Orbital |
| PESA | Proton Elastic Scattering Anal. |
| ICARUS | Imaging Cosmic And Rare Underground Signal |
| GEMI | Global Environmental Management Initiative |
| MIBERS | Multi-ion-beam Reactive Sputtering |
| SPUMPN | Single-annihilation Procedure Unrestricted Moeller-Plesset Nth-order |