| M&N | morning and night |
|---|---|
| NC | nasal cannula; nasal clearance; neck complaint; neonatal cholestasis; neural crest; neurologic check... |
| N&M | nerves and muslces; night and morning |
| nm | nanometer; night and morning [Lat. nocte et mane] |
| noc, noct | at night [Lat. nocte] |