| CO | carbon monoxide; cardiac output; castor oil; casualty officer; centric occlusion; cervical orthosis;... |
|---|---|
| HIPO | hemihypertrophy, intestinal web, preauricular skin tag, and congenital corneal opacity [syndrome]; H... |
| IOU | intensive care observation unit; international opacity unit |
| ILP | inadequate luteal phase; insufficiency of luteal phase; interstitial laser photocoagulation; interst... |
| 198AU | Radioactive Gold(used in interstitial radio theraphy) |