| Acronym | Meaning |
| XAFS | X-ray Absorption Fine Structure |
| CLRTAP | Convention On Long-Range Transboundary Air Pollution |
| DARTAB | Dose And Risk Assessment Tabulation |
| PD | Photoelectron Diffraction |
| SCN | Suprachiasmatic Nucleus |
| PV-RR | Perturbational-variational-Rayleigh-Ritz (matrix Method In Mol. Calcns.) |
| CCRM | Coupled-channel Reactance Matrix (in Atom Surface Scattering) |
| ACOPS | UK Advisory Committee Of Oil Pollution Of The Sea |
| ADA | N-(2-acetamido) Iminodiacetic Acid |
| MIRACL | Mid Infrared Advanced Chemical Laser |