| Acronym | Meaning |
| CALCRUST | Consortium For Study Of The California Crust |
| NDBC | National (or NOAA) Data Buoy Center |
| INFOTERRA | International Environmental Research And Referral Service Of UNEP |
| PEM | Particle Environment Monitor |
| MT | Magnetic Tape |
| CDA | Command And Data Acquisition |
| NSSDC | National Space Science Data Center |
| ADS | Airborne Data System |
| MS | MASnet Code For The Mass Storage System |
| NCF | Network Control Facility |