There are multiple definitions:

1. North American pulse-field gel electrophoresis(English)

2. National Academies Press(English)

   • Biomedical journals

3. Nomina Anatomica Paris(Latin)

   • Anatomy

4. National Association of Phlebotomists(English)

   • Hematology, Organizations (documentation)
   • http://www.phlebotomy.org/

5. nursing assistive personnel(English)

   • UAP
   • Nurse / nursing
   • https://doi.org…ogn.2015.11.005

6. Nutrition And Physical [activity](English)

   • SACC
   • Nutrition, Physical therapy, Exercise & Training
   • https://gonapsa…sment-materials
   • https://www.sli…ysical-activity
   • https://slidepl…/slide/7266773/