| Acronym | Meaning |
| ORSTB | Overlap-reduced Semiempirical Tight-binding |
| SSF | Slow Sand Filtration (water Treatment) |
| BATS | Biosphere-Atmosphere Transfer Scheme |
| SUSIM | Solar Ultraviolet Spectral Irradiance Monitor |
| MFP | Magnetic Field Perturbative (method) |
| AKD | Alkyl Ketene Dimer |
| CEPH | Centre D'Etudes Du Polymorphisme Humain |
| ENCS | Existing And New Chemical Substances |
| BHC | Benzene Hexachloride |
| CID | Configuration Interaction With Doubly Excited Configurations |