| Acronym | Meaning |
| UCMR | Unregulated Contaminant Monitoring Regulation |
| IPM | Independent Particle Model |
| POCP | Photochem. Ozone Creation Potential |
| GHF | Generalized Hellmann-Feynman (theorem) |
| SR-CC | Single Reference-CC |
| FDDI | Fiber-Distributed Data Interface |
| MAPS | Measurement Of Air Pollution From Satellites |
| CWM | Center For Waste Management |
| AMS | Accelerator Mass Spectrometry Or Spectroscopy |
| CAOPM | Configuration-averaged Optimized-potential Model |