There are multiple definitions:

1. nosocomially acquired Legionella pneumonia(English)

   • Pulmonology

2. Neisseria meningitidis strain H44/76 Autotransporter featuring a Lipoprotein motif serine Protease(English)

   • NALP3=cryopyrin
   • MATER

3. neuroadenolysis of the pituitary(English)

   • Pituitary (gland)

4. NACHT leucine-rich-repeat protein(English)

   • a subfamily of NOD-like receptors
   • NACHT
   • Receptors