| ORS | olfactory reference syndrome; oral rehydration solution; oral surgery, oral surgeon; Orthopaedic Res... |
|---|---|
| COLD | A cold agglutinin titer |
| HAL | hepatic artery ligation; hypoplastic acute leukemia |
| hal | halogen; halothane |
| OCP | octacalcium phosphate; ocular cicatricial pemphigoid; oral case presentation; oral contraceptive pil... |