| Acronym | Meaning |
| CCIX | Continuous Countercurrent Ion Exchange |
| BO | Born Oppenheimer |
| ENDF | Evaluated Nuclear Data File |
| RDO | Reduced Density Operator |
| ATSR | Along-Track Scanning Radiometer |
| NAA | Neutron Activation Analysis |
| OSSA | Office Of Space Science And Applications (NASA) |
| SCA-QD-MBPT | Self-consistently Adapted (core Reference State) Quasidegenerate Many-body Perturbation Theory |
| THAA | Total Hydrolyzable Amino Acids |
| NPPC | Nuclear Power Plant Consultant |