| OE | on examination; order entry [system]; orofacial cleft; orthopedic examination; otitis externa; out-stationed enrollment |
|---|---|
| Oe | oersted |
| OEE | osmotic erythrocyte enrichment; outer enamel epithelium |
| OEF | oil immersion field; oxygen extraction fraction |
| OEIS | omphalocele, exstrophy, imperforate anus, spinal defects [complex] |
| OEL | occupational exposure limit |
| OEM | opposite ear masked; original electronic manufacturer |
| OER | Oxygen Enhancement Ratio |
| OER | osmotic erythrocyte [enrichment]; oxygen enhancement ratio |
| OERP | Office of Education and Regional Programming |