| OHR | occupational health research; Office of Health Research |
|---|---|
| OHS | obesity hypoventilation syndrome; occipital Horn syndrome; occupational health service; ocular histo... |
| OILD | occupational immunologic lung disease |
| OM | obtuse mental; occipitomental; occupational medicine; ocular movement; oculomotor; Osborne Mendel [r... |
| OMAS | occupational maladjustment syndrome |