| Acronym | Meaning |
| SOD | Superoxide Dismutase |
| POLARIS | Photochem. Of Ozone Loss In The Arctic Region In Summer |
| MRS | Micro-Raman Spectroscopy |
| ICEAS | Intermittent Cycle Extended Aeration System (activated Sludge) |
| WAS | Waste Activated Sludge |
| INMS | Institute For National Measurement Standards |
| DCPC | Division Of Cancer Prevention And Control |
| SMMR | Scanning Multichannel Microwave Radiometer |
| PHWR | Pressurized Heavy Water Reactor |
| MP3 | Moeller-Plesset Third-order Perturbation Theory |