| Acronym | Meaning |
| NDP | Net Driving Pressure (in Membrane Reverse Osmosis) |
| NIWA | National Institute For Water And Atm. Research [New Zealand] |
| HFF | Hellmann-Feynman Force Approximation |
| ECFS | Hot And Cold Potable Water (French; L'eau Chaude Et Froide Sanitaire) [a Class Of Pipe Application] |
| CPV | Cowpox Virus |
| TOW | Time Of Wetting |
| CAFNA | Coded Aperture Fast Neutron Analysis |
| IAM | Integrated Assessment Modeling |
| RDO | Reduced Density Operator |
| MAFIAS | Micro Ammonia Flow Injection Analysis System |