| CORA | conditioned orientation reflex audiometry |
|---|---|
| GOAT | Galveston Orientation and Amnesia Test |
| NPOS | nurses professional orientation scale |
| OI | obturator internus; occasional insomnia; opportunistic infection; opsonic index; orgasmic impairment... |
| OMC | office of managed care; orientation-memory-concentration [test] |