| Acronym | Meaning |
| RISC | Reduced Instruction Set Computer |
| PRC | People's Republic Of China |
| FK | Falkland Islands (ISO 3166 Digram; FIPS 10-4 Territory Code) |
| D | Deuterium |
| LMS | London Mathematical Society - London |
| APS | American Physical Society - Antiphospholipid Antibody Syndrome |
| WRAIR | Walter Reed Army Institute Of Research |
| DAQ | Data Acquisition -Delivered Audio Quality |
| ICS | In-Country Support - Intelligence And Communications Systems - Interim Contractor Support |
| CUB | Cuba (ISO 3166 Trigram) |