There are multiple definitions:

1. National Science Foundation(English)

   • in USA
   • Organizations (scientific), Organizations (governmental)
   • https://www.nsf.gov/

2. N-ethylmaleimide-sensitive factor(English)

   • SNARE

3. National Service Framework(English)

   • in UK, lost in the reform of the NHS after 2010 and the establishment of NHS England
   • NHS
   • Standards, Health care, Social aspects, Organizations (governmental), Parkinson
   • https://www.mst…-frameworks-nsf

4. nephrogenic systemic fibrosis(English)

   • a rare disorder that occurs in association mainly with chronic kidney disease
   • CKD, GBCA, GRAPPA, GRASE
   • Nephrology, Pathology, Medical imaging
   • https://doi.org…7/ijnrd.s392231