| NBW | normal birth weight |
|---|---|
| NC/AT | normal cephalic atraumatic |
| NCD | National Commission on Diabetes; National Council on Drugs; neurocirculatory dystonia; nitrogen clea... |
| NDR | neonatal death rate; normal detrusor reflex |
| NDS | Naval Dental School; neurologic deficit score; new drug submission; normal dog serum |