| Acronym | Meaning |
| PIXES | Particle Induced X-ray Emission Spectroscopy |
| DCN | Document Change Notice |
| IMROX | Immersed Rotation Oxidation |
| GOMOS | Global Ozone Monitoring By Occultation Of Stars |
| RAS | Renin-angiotensin System |
| WGSATM | Working Group On The Statistical Aspects Of Trend Monitoring (ICES) |
| AWT | Advanced Wastewater Treatment |
| RMAN | Recovered Materials Advisory Notice |
| UAM | Urban Airshed Model |
| ECSC | European Coal And Steel Community |