What does NPU stand for?

National Pharmaceutical Union (PDAA)

National Postal Union - Later, APWU

Natural Processing Unit

Naval Parachute Unit

Navigation Processor Unit (MCD)

Ne Plus Ultra - No Further; i.e., the pinnacle of attainment - French

Net Protein Utilization - Nutrition

Network Processing Unit

Newport Plastics, Lyndonville, VT - Manufacturer code for watercraft hull identification number (USCG)

Newspaper Press Union (DGA)

Nitrogen Pressure Unit (MCD)

Nitrogen Purge Unit (MCD)

Nordic Postal Union (EA)

Not Passed Urine - Medicine

Puimei Naga - Language code (ETLW)