| Acronym | Meaning |
| EMMC | Environmental Monitoring Management Council |
| IPA | Independent-pair Approximation |
| LCGO | Linear Combination Of Group Orbitals |
| HDF | Hubble Deep Field |
| PCV | Positive Crankcase Ventilation |
| SC-OFMSW | Separately-collected Organic Fraction Of Municipal Solid Waste |
| BPWTT | Best Practical Wastewater Treatment Technology |
| FRET | Fluorescence Resonance Energy Transfer |
| GHO | Generalized Hybrid Orbital (ao) |
| TQEM | Total Quality Environmental Management |