| Acronym | Meaning |
| FIA | Flow Injection Analysis |
| AVCC | Average Carbonaceous Chondrites |
| CMO | Canonical Molecular Orbital |
| TNF | Tumor Necrosis Factor |
| AFPR | Alliance Of Foam Packaging Recyclers |
| MQES | Metastable-quenched Electron Spectroscopy |
| ERRIS | Emergency And Remedial Response Information System |
| UNO-CAS | Unrestricted Natural Orbital-complete Active Space |
| MPT | Microwave Plasma Torch |
| MCSCRF | Multiconfigurational Self-consistent Reaction Field |