Operating
| Unit
| Operating | |
| el. abbr. | O |
| operating | |
| abbr. qual.cont. | oper. |
| UNIT | |
| abbr. | Unit |
| abbr. avia. | unsteady natural flow type |
| abbr. chem. scient. | Unifying Nitrogen Ion Transmitter |
| abbr. comp., net. IT | Unattended Network Installation Toolkit |
| abbr. ed. scient. | University Of Natal Intensive Tuition |
| abbr. el. | universal numerical interchange terminal |
| abbr. sport. | United Notorious Intoxication Team |
| abbr. UN | United Nations Intelligence Taskforce |
| Unit | |
| abbr. | unitarian |
| |||
| oper. | |||
| op | |||
| |||
| O | |||
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Operating : 2 phrases in 2 subjects |
| Abbreviation | 1 |
| Information technology | 1 |