| 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... |
| MDII | Multiple Daily Insulin Injections |
| MDI | manic-depressive illness; metered dose inhaler; multiple daily injection; Multiscore Depression Inve... |