| Acronym | Meaning |
| ETF | Extended Thomas-Fermi (model) |
| HSLA | High-strength Low-alloy (steel) |
| PCS | Photon Correlation Spectroscopy |
| IAP | Intermittent Aeration Process (for Waste Treatment) |
| SLBO | Strictly Localized Bond Orbital |
| NSTC | National Science And Technology Council |
| SCOT | Shell Claus Off-gas Treating |
| RWMC | Radioactive Waste Management Complex (INEL) |
| VMAT | Vesicular Monoamine Transporter |
| CLIM | Climate Change Database (accessible Through OLS) |