| Acronym | Meaning |
| CTOF | Charge Time-of-Flight Spectrometer |
| BBK | Brauner-Briggs-Klar (wave Function In Atom-electron Scattering) |
| BHMT | Betaine-homocysteine Methyltransferase |
| XRPD | X-ray Powder Diffraction |
| FRS | Forward Recoil Spectrometry |
| CNPPA | Commission On National Parks And Protected Areas |
| AWRG | Acid Waters Review Group (UK) |
| CCS | Classical Centrifugal Sudden (in Calcns. On Reactions) |
| ENCS | Existing And New Chemical Substances |
| FIFRA | Federal Insecticide |