| Acronym | Meaning |
| DMI | Desktop Management Interface (computing) |
| BNF | Backus-Naur Form (computing) |
| RN | Radon -Registered Nurse (USA) |
| APL | A Programming Language - Acute Promyeloid Leukaemia - Anti-Personnel Landmine - Applied Physics Laboratory (Johns Hopkins University) |
| ACC | U.S. Air Combat Command - Air Component Commander - Altocumulus Castellanus - Atlantic Coast Conference - Automatic Climate Control - Area Control Center |
| HCSC | Higher Command And Staff Course |
| RH | Rhodium |
| ADDNS | Advanced Deployable Day/Night Simulation |
| OPSI | Overwhelming Post Splenectomy Infection - UK Office Of Public Sector Information |
| ASUW | AntiSUrface Warfare |