| Acronym | Definition |
|---|
| RUO➣Research Use Only |
| RUO➣Resident Unit Officer |
| RUO➣Reference Unbundling Offer |
| RUO➣Reflection for UNIX and OpenVMS (Virtual Memory System) |
| RUO➣Radikal Ungdom Odense (Danish: Radical Youth Odense; Denmark) |
| RUO➣Run Ultima Online (emulator program) |
| RUO➣Residual Urine Output |