| OET | oral endotracheal tube; oral esophageal tube |
|---|---|
| OHI | Occupational Health Institute; operative hypertension indicator; oral hygiene index; Oral Hygiene In... |
| INT | intermediate; intermittent; intern, internship; internal; interval; intestinal; intima; p-iodonitrot... |
| Int | international; intestinal |
| int | internal |