| Acronym | Meaning |
| MTC | Main Trunk Circuit |
| PMB | Performance Measurement Baseline |
| SWAP | Severe Weather Avoidance Program |
| INS | Inertial Navigation System |
| IPMP | Intellectual Property Management Program (UCAR) |
| POAM | Polar Ozone And Aerosol Measurement |
| ASLB | Atomic Safety Licensing Board |
| ATM | Asynchronous Transfer Mode |
| DIB | Directory Information Base |
| GGI | GPS Geoscience Instrument |