| Acronym | Meaning |
| IPIRDW | Independent-process (and) Isolated-resonance (approxn. Using) Distorted Waves |
| IRC | Information Resource Center |
| WMAP | Wilkinson Microwave Anisotropy Probe |
| EB | Extended Basis (set) |
| BHMF | Black Hole Mass Functionpar |
| MOX | Mixed Oxide |
| SOGVB | Strongly-orthogonal Generalized Valence-bond (wave Function) |
| CSP | Computational Singular Perturbation (math Modeling Method) |
| ROBK2 | Relativistic Second-order Oppenheimer-Brinkman-Kramers (in Ion-scattering Calcns.) |
| SDIO | Strategic Defense Initiative Organization |