There are multiple definitions:

1. Nederlandse Vereniging voor Thoraxchirurgie(Dutch)

   • Surgery, Organizations (clinical)

2. Number of particles, Volume and Temperature [are constant](English)

   • based on equation of motion and applied in simulations characterizing the thermodynamic and dynamics properties of biomolecular systems
   • NVE, MD
   • Biophysics
   • https://doi.org…cs.jctc.1c00448