| Acronym | Meaning |
| PSCC | Pseudostate Close Coupling |
| CCC | Convergent Close Coupling |
| AOQL | Average Outgoing Quality Limit |
| TDCR | Triple To Double Coincidence Ratio |
| ICOM | International Congress On Membranes |
| MCSCF | Multi Configuration Self Consistent Field |
| SMIE | Solid-metal-induced Embrittlement |
| COHMAP | Cooperative Holocene Mapping Project |
| IASH | International Association On The Stability And Handling Of Liquid Fuels |
| RASW | Relativistic Augmented Spherical Wave Method |