| operating characteristic | ciri pengoperasian | ciri pengoperasian | ciri pengoperasian | Biologi |
| operating light level | tingkat cahaya pengoperasian | ARAS pengoperasian cahaya | aras pengoperasian cahaya | Komunikasi Massa |
| operating characteristics | ciri pengoperasian | Tiada | ciri pengoperasian | Matematik |
| Differential Operator | Operator Diferensial | Tiada | Pengoperasian Pembeza (An) | Matematik |
| operation documentation | dokumentasi pengoperasian | dokumentasi kendalian | dokumentasi kendalian | Teknologi Maklumat |
| operating environment | lingkungan pengoperasian | suasana pengendalian | persekitaran pengendalian | Teknologi Maklumat |
| operating period | periode pengoperasian | tempoh pengendalian | tempoh pengendalian | Ekonomi |
| aircraft operating cycle | siklus pengoperasian pesawat | kitar pengendalian pesawat | kitar kendalian pesawat | Kejuruteraan Kapal Terbang |
| network operating system | sistem pengoperasian jaringan | sistem pengendalian rangkaian | sistem pengendalian rangkaian | Teknologi Maklumat |
| vehicle operating cost | kos pengoperasian kenderaan | kos operasi kenderaan | kos operasi kenderaan | Ekonomi |