| Acronym | Meaning |
| NMOG | Non-Methane Organic Gases |
| SEXAFS | Surface-extended X-ray Absorption Fine Structure |
| WATCH | Working Group On Assessment Of Toxic Chemicals |
| HFP | Hartree-Fock (plus) Pauli (terms) |
| TSDIA | Two-scale Direct-interaction Approximation [in Flow Energy Modeling] |
| FIE | Flow-injection Extraction |
| SPU | Segmented Polyurethane |
| OTE | Oxygen Transfer Efficiency (of Aeration Diffusers) |
| JERS | Japanese Earth Resources Satellite |
| CCR | Close-coupled Representation |