| NCD | National Commission on Diabetes; National Council on Drugs; neurocirculatory dystonia; nitrogen clea... |
|---|---|
| OCD | obsessive compulsive disorder; Office of Child Development; Office of Civil Defense; osteochondritis... |
| ODD | oculodentodigital [dysplasia]; oppositional defiant disorder |
| OMD | ocular muscle dystrophy; oculomandibulodyscephaly; organic mental disorder; oromandibular dystonia |
| PDD | pervasive developmental disorder; platinum diamminodichloride [cisplatin]; primary degenerative deme... |