| Acronym | Meaning |
| RFCC | Residue Fluid Catalytic Cracking |
| ANO | Atomic Natural Orbital |
| CI | Chemical Ionization |
| NCEA | National Center For Environmental Assessment |
| CAE | Constant Analyzer Energy |
| RMTA | Rigid Muffin-tin Approxn. |
| VDAC | Voltage-dependent Anion Channel |
| EMMI | Environmental Monitoring Methods Index |
| MHA | Mott-Hubbard-Anderson (model In Band-structure Calcns.) |
| VICAR | Visual Colorimeter For Atmospheric Research |