Operating
| System
| Operating abbr. | |
| el. abbr. | O |
| operating abbr. | |
| abbr. qual.cont. | oper. |
| SYSTEM abbr. | |
| abbr. | Saves You Serious Time Energy And Money |
| abbr. el. | systematic interaction model |
| abbr. mil., WMD | system |
| system abbr. | |
| abbr. | syst; syst. |
| abbr. AI. | SI system |
| abbr. auto. | aided manufacturing system; gasoline injection system |
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| oper. | |||
| op | |||
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| O | |||
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Operating : 2 phrases in 2 subjects |
| Abbreviation | 1 |
| Information technology | 1 |