| NIMS | National Infant Mortality Surveillance |
|---|---|
| NMR | neonatal mortality rate; nictitating membrane response; nuclear magnetic resonance |
| NNM | neonatal mortality |
| PM | after death (Lat. post mortem); after noon [Lat. post meridiem]; mean pressure; pacemaker; pantomogr... |
| PNM | perinatal mortality; peripheral dysostosis, nasal hypoplasia, and mental retardation [syndrome]; per... |