| Acronym | Meaning |
| GWF | Global Warming Factor |
| ILAP | Inter-Laboratory Analysis Program |
| HKS | Hohenberg-Kohn-Sham (quantum Theory) |
| ABPA | Allergic Bronchopulmonary Aspergillosis |
| GRAM | Generalized Rank Annihilation Method |
| ACEC | Areas Of Critical Environmental Concern |
| APHEA2 | Air Pollution And Health: A European Approach 2 |
| OPANA | Operational Version Of The Atm. Mesoscale Numerical Pollution Model |
| NIRE | National Institute For Resources And Environment |
| PSES | Pretreatment Standards For Existing Sources |