| ORS | olfactory reference syndrome; oral rehydration solution; oral surgery, oral surgeon; Orthopaedic Res... |
|---|---|
| OCP | octacalcium phosphate; ocular cicatricial pemphigoid; oral case presentation; oral contraceptive pil... |
| OET | oral endotracheal tube; oral esophageal tube |
| OHI | Occupational Health Institute; operative hypertension indicator; oral hygiene index; Oral Hygiene In... |
| CLO | 의복의 열차단 단위 1 CLO; 기온 21℃, 기습 50 %, 기류 5cm/sec에서 Metabolic Rate 50 Kcal/m2/Hr로 피부온도가 ... |