| Acronym | Meaning |
| WERC | Waste-management Education & Research Consortium |
| PSEP | Polyhedral Skeletal Electron Pair (for Metal Clusters) |
| SOTE | Standard Oxygen Transfer Efficiency (of Aeration Diffusers) |
| LSTH | Liu-Siegbahn-Truhlar-Horowitz (potential-energy Surface) |
| RSCF | Relativistic Self-consistent Field |
| EPW | Electron Plasma Wave |
| ACAT | Acyl-CoA: Cholesterol Acyltransferase |
| CLAES | Cryogenic Limb Array Etalon Spectrometer |
| SURF III | Synchrotron UV Radiation Facility (at NIST) |
| IASC | International Arctic Science Committee |