| Acronym | Meaning |
| RTU | Remote Terminal Unit |
| STORET | Storage And Retrieval Of U.S. Waterways Parametric Data |
| RFA | Regulatory Flexibility Act |
| SGO | Spherical Gaussian Orbital |
| FSR | Free Spectral Range |
| TSH | Thyroid-stimulating Hormone |
| RMCL | Recommended Maximum Contaminant Level |
| NEKIA | National Education Knowledge Industry Association |
| NPC | Niemann-Pick Type C Disease |
| RH | Relative Humidity |