| NO | narcotics officer; nitric or nitrous oxide; none obtained; nonobese; nurse's office |
|---|---|
| NP | nasopharynx, nasopharyngeal; near point; necrotizing pancreatitis; neonatal-perinatal; neuritic plag... |
| NPA | National Pharmaceutical Association; National Pituitary Agency; near point accommodation; Nurse Prac... |
| NR | do not repeat [Lat. non repetatur]; nerve root; neural retina; neutral red; noise reduction; nonreac... |
| NSNA | National Student Nurse Association |