| Acronym | Meaning |
| DGC | Division Of Grants And Contracts |
| IEE | Institute Of Electrical Engineers |
| AEC | Atomic Energy Commision |
| WATS | Wide Area Telecommunications Service |
| IOC | Intergovernmental Oceanographic Commission |
| AIAIT | Army Intelligence And Threat Analysis Center |
| M-PDU | Multiplexed Protocol Data Unit |
| CALS | Computer-aided Acquisition And Logistics Support |
| AIP | Agreement In Principle |
| CCSDS | Consultative Committee For Space Data Systems |