| Acronym | Meaning |
| AM | Amplitude Modulation |
| OIR | Office Of Industry Relations |
| PDU | Power Distribution Unit |
| WATS | Wide Area Telecommunications Service |
| NIU | Network Interface Unit |
| WG/NGWR | Working Group For Next-Generation Weather Radar |
| HMS | Hungarian Meteorological Service |
| CALLS | California Academia Libraries List Of Serials |
| DECDOS | DEC's Version Of DOS |
| TCAS-II | Traffic Alert And Collision Avoidance System |