| MRSD | mental retardation-skeletal dysplasia [syndrome] |
|---|---|
| OAV | oculoauriculovertebral [dysplasia] |
| OAVD | oculoauriculovertebral dysplasia |
| OD | Doctor of Optometry; obtained absorbance; occipital dysplasia; occupational dermatitis; occupational... |
| ODD | oculodentodigital [dysplasia]; oppositional defiant disorder |