| Acronym | Meaning |
| TFRS | Transition Flow Reaction System |
| ALMA | Atacama Large Millimeter Array |
| NCEA | National Center For Environmental Assessment |
| CPED | Convergent Probe Electron Diffraction |
| MNDO | Modified Neglect Of Diatomic Overlap |
| CCSDTQP | CCSDTQ (and) Pentuple (excitations) |
| PNRA | Photon-tagged Nuclear Reaction Analysis |
| FACCE | Frontal Analysis Continuous Capillary Electrophoresis |
| PAC | Powdered Activated Carbon |
| PVP | Polyvinyl Pyrrolidone |