| NIMH | National Institute of Mental Health |
|---|---|
| NMHCA | National Mental Health Consumers' Association |
| NMI | no mental illness; normal male infant |
| OM | obtuse mental; occipitomental; occupational medicine; ocular movement; oculomotor; Osborne Mendel [r... |
| OMD | ocular muscle dystrophy; oculomandibulodyscephaly; organic mental disorder; oromandibular dystonia |