Operating
| Instructions
| Operating | |
| el. abbr. | O |
| operating | |
| abbr. qual.cont. | oper. |
| instruction | |
| abbr. agric. | instn |
| mil. abbr. | inst; instr |
| instructions | |
| energ.ind. abbr. | instr. |
| |||
| oper. | |||
| op | |||
| |||
| O | |||
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Operating : 2 phrases in 2 subjects |
| Abbreviation | 1 |
| Information technology | 1 |