| Acronym | Meaning |
| EMA | European Medicines Agency |
| OC | Occitan Language (ISO 639-1 Code) |
| DIY | Do It Yourself |
| DOT | Department Of Transportation (U.S. Federal Or State) |
| UDP | User Datagram Protocol |
| HRM | His (or Her) Royal Majesty |
| PEPFAR | President's Emergency Plan For AIDS Relief |
| OODA | Observation |
| CPON | Certified Pediatric Oncology Nurse |
| H | Hecto |