| Acronym | Meaning |
| IDA | Isotope Dilution Analysis |
| SOCI | Second-order Configuration Interaction |
| CEDAR | Coupling, Energetics, And Dynamics Of Atm. Regions [project] |
| IQG | Independent Quasigeminals |
| OASCR | Office Of Advanced Scientific Computing Research |
| CCPA | Cluster Coherent Potential Approximation (for Electronic Structure Calcns.) |
| QKM | Quadratic Kohn Method (variational Method For Scattering) |
| DSVI | Diluted Sludge Volume Index |
| LDR | Linear Dynamic Range |
| MBPT(2)-GF | Second-order Many-body Perturbation Theory-green Function |