| Acronym | Meaning |
| USGCRP | U.S. Global Change Research Program |
| ELLPAT | Environmental Lead Laboratory Proficiency Analytical Testing |
| MLSS | Mixed Liquor Suspended Solids |
| CAEAL | Canadian Association For Environmental Analytical Laboratories |
| RFA | Renormalized Free Atom (model |
| MIC | Microwave Integrated Circuit |
| LFER | Linear Free Energy Relationship |
| GWF | Generalized Wannier Function |
| TCL-GME | Time-convolutionless Generalized Master Equation (in Quantum Tunneling Calcns.) |
| APLG | Antisymmetrized Product Of Localized Geminals (wave Function) |