| Acronym | Meaning |
| MSMA | Murrell-Shaw-Musher-Amos Exchange Perturbation Theory |
| ACRR | Annular Core Research Reactor |
| SEESR | Simultaneous Electrochemical-electron Spin Resonance |
| MDV | Marek's Disease Virus |
| SAR | Synthetic Aperture Radar |
| SLMTO | Surface Linear (combination) Of Muffin-tin Orbitals |
| MLE | Maximum Likelihood Estimate |
| UNEP | United Nations Environmental Program |
| HOE | Holographic Optical Element |
| ESSP | Earth Systems Science Pathfinder |