| Acronym | Meaning |
| MC | Macao (FIPS 10-4 Territory Code) -Master Of Ceremonies -Megacoulomb -Military Cross (bravery Award) -Monaco (ISO 3166 Digram) -Mortar Carrier -Eleven Hundred (in Roman Numerals) |
| GNU | GNU's Not Unix |
| PNP | Partido Nuevo Progresista - Plug 'N' Play/Pray - Positive Negative Positive |
| EVA | Extra-Vehicular Activity |
| RN | Kirundi Language (ISO 639-1 Code) |
| UG | Uganda (ISO 3166 And FIPS 10-4 Country Code Digram) |
| AJP | Allied Joint Publication |
| ON | Ontario (postal Symbol) |
| RAP | Radio Access Point - Radiological Assistance Program (U.S. Department Of Energy) - Rear Area Protection - Recognised [Operating/Operational] Air Picture - Recurring Advance Payment - Relational Associative Processor - Reliable Acoustic Path - Rocket-Assis |
| EOM | End Of Message |