| NAR | nasal airway resistance; National Association for Retarded [Children, Citizens]; no action required |
|---|---|
| NARC | narcotic; National Association for Retarded Children; nucleus arcuatus |
| NOSIC | Neurologic Outcome Scale for Infants and Children |
| NSCC | National Society for Crippled Children |
| PIC | Personality Inventory for Children; polymorphism information content |