| Acronym | Meaning |
| ACIS | Advanced CCD Imaging Spectrometer |
| PFC | Polarized Frozen Core Approximation |
| CEM | Continuous Emissions Monitoring |
| OPIT | Oxide Powder In Tube |
| RITE | Research Institute Of Innovative Technology For The Earth (Japan) |
| BKC | Born-von Karman Cell (model For Electronic-structure Calcn.) |
| ELF | Extremely Low Frequency |
| FBE | Flat Bed Electrophoresis |
| ATF | Activating Transcription Factor |
| HV | Vickers Hardness Number |