| Acronym | Meaning |
| TF/SC | Trickling Filter/Solids Contact Process (for Wastewater Treatment) |
| STT | Surface Tension Transfer |
| VU-CCSD/R | Valence Universal-coupled Cluster (with) Single (and) Double (excitations) (r = Radial Components Of The Cluster Amplitudes) |
| RNA | Remediation By Natural Attenuation |
| STARS | Strategic Targeting Activities Reporting System |
| DU | Dobson Units |
| PRDA | Program Research And Development Announcement |
| IEQ | Indoor Environmental Quality |
| FBBR | Fluidized Bed Biofilm Reactor |
| ART | Asphalt Residual Treatment |