| N | x m newtons by meter |
|---|---|
| n | nov new name [Lat. nomen novum] |
| n | Greek letter nu; degrees of freedom; frequency; kinematic velocity; neutrino |
| N&D | nodular and diffuse |
| N&M | nerves and muslces; night and morning |
| N&T | nose and throat |
| N&V | nausea and vomiting |
| N(H) | proton density |
| n-Bu | n-butyl |
| n-CAD | negative coronoradiographic documentation |