| 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... |
| C&C | cold and clammy |
| CHAD | cold hemagglutinin disease; cyclophosphamide, hexamethylmelamine, Adriamycin (doxorubicin), and cisp... |