| Acronym | Meaning |
| FWE | Faddeev-Watson Expansion (for T-operator In Atomic Collisions) |
| CSMOS | Center For Subsurface Modeling Support |
| TOM | Transition Operator Method |
| HFPP | Hartree-Fock Pseudopotential |
| CCPPA | Coupled-cluster Polarization-propagator Approxn. |
| NHRL | Northern Hemisphere Reference Line |
| CVP | Central Venous Pressure |
| MCT | MOS Controlled Thyristor |
| MBH | Mediobasal Hypothalamus |
| ARIC | Acid Rain Information Clearinghouse |