| Qo | oxygen consumption |
|---|---|
| Qo | flow at origin |
| QO2 | oxygen quotient; oxygen utilization |
| qod | every other day [Lat. quaque altera die] |
| qoh | every other hour [Lat. quaque altera hora] |
| QOL | quality of life |
| QOLI | quality of life index |
| QOLI-P | quality of life index-Padilla |
| qon | every other night [Lat. quaque altera nocte] |
| QoS | quality of service |