| Acronym | Meaning |
| MCQR | Multiconfigurational Quadratic Response |
| FVVM | Finite Volume Variational Method (for Mol. Calcns.) |
| TRACE | Transport And Atmospheric Chemistry Near The Equator |
| ACWA | American Clean Water Association |
| AOEC | Association Of Occupational And Environmental Clinics |
| LCTAO | Linear Combination Of Traveling Atomic Orbitals |
| DRIFT | Diffuse Reflectance IR Fourier Transform |
| APCVD | Atm.-pressure Chem. Vapor Deposition |
| HMO | Hueckel Molecular Orbital |
| ACIL | American Council Of Independent Laboratories |