| Acronym | Meaning |
| SMBC | Soil Microbial Biomass Carbon |
| RPEHMO | Relativistically Parametrized Extended Hueckel MO |
| TOPO | Trioctylphosphine Oxide |
| LMWH | Low-molecular-weight Heparin |
| VC | Vital Capacity (lung Function) |
| VMR | Vol. Mixing Ratio |
| IPA | Independent-pair Approximation |
| SLP | Static Linear Polarization |
| POTW | Publicly Owned Treatment Works |
| FEMA | Federal Emergency Management Agency |