| Acronym | Meaning |
| GLC | Ground Level Concentration |
| FIP | Full Intra-pair (spin-coupling) (wave Function) |
| AASD | Anaerobic Activated Sludge Digestion |
| AOAC | Association Of Official Analytical Chemists |
| BPAI | Board Of Patent Appeals And Interferences |
| LAMP | Lysosome-Associated Membrane Protein |
| MIES | Metastable Impact Electron Spectroscopy |
| BEJ | Best Expert Judgement |
| OCPSF | Organic Chemical, Plastics, And Synthetic Fiber Industry |
| PIB | Potential Induced Breathing (model In Electronic-structure Studies In Superconductors) |