| OS | 1) Opening Snap 2) Orthopedic(Osteo)-Surgery; 정형 외과 3) Oculus Sinister; Left Eye; 좌측 눈 |
|---|---|
| OS | left eye [Lat. oculus sinister]; occipitosacral; occupational safety; office surgery; Omenn syndrome; opening snap; operating system; oral surgery; organ-specific; orthopedic surgeon, orthopedic surgery; Osgood-Schlatter [disease]; osteogenic sarcoma; osteosarcoma; osteosclerosis; oubain sensitivity; overall survival; oxygen saturation |
| Os | osmium |
| OSA | Obstructive Sleep Apnea |
| OSA | obstructive sleep apnea; Office of Services to the Aging; Optical Society of America; ovarian sectional area |
| OSAS | obstructive sleep apnea syndrome |
| osc | oscillation |
| OSCAR | on-line survey, certification and reporting system |
| OSCC | oral squamous cell carcinoma |
| OSCE | objective structured clinical examination |