| ORS | olfactory reference syndrome; oral rehydration solution; oral surgery, oral surgeon; Orthopaedic Res... |
|---|---|
| COMP | cartilage oligomeric matrix protein; complication; cyclophosphamide, vincristine, methotrexate, pred... |
| comp | comparative; compensation, compensated; complaint; complete; composition; compound, compounded; comp... |
| OCP | octacalcium phosphate; ocular cicatricial pemphigoid; oral case presentation; oral contraceptive pil... |
| OET | oral endotracheal tube; oral esophageal tube |