N.p.o.
1.
Latin non per os (not by mouth)
2.
Latin nil per os (nothing by mouth)
Read Also:
- Npp
non-physician practitioner
- Nppc
National Pork Producers Council
- Npphcn
National Progressive Primary Health Care Network
- Nppl
Network Picture Processing Language. An interactive language for manipulation of digraphs. [“A Graph Manipulator for On-line Network Picture Processing”, H.A. DiGiulio, Proc FJCC 35 (1969)].
- Nppsis
National Parent to Parent Support and Information System