| Acronym | Meaning |
| ARG | Appointments Review Group |
| ADI | Acceptable Daily Intake |
| PPMV | Parts Per Million By Volume |
| PFS | Physical Facilities Service(s) |
| RAS | Royal Astronomical Society |
| CCC | Cray Computer Corporation |
| HKUST | Hong Kong University Of Science And Technology |
| CDC | Centers For Disease Control |
| USAFGL | United States Air Force Geophysical Laboratory |
| GNSS | Ground Network Scheduling System |