| ORS | olfactory reference syndrome; oral rehydration solution; oral surgery, oral surgeon; Orthopaedic Res... |
|---|---|
| TAO | Thrombo-Angiitis Obliterans = Buerger's Disease |
| TAO | thromboangiitis obliterans; triacetyloleandomycin |
| OCP | octacalcium phosphate; ocular cicatricial pemphigoid; oral case presentation; oral contraceptive pil... |
| OET | oral endotracheal tube; oral esophageal tube |