conservation_of_matter
1. [ noun ] (physics) a fundamental principle of classical physics that matter cannot be created or destroyed in an isolated system
Synonyms: law_of_conservation_of_mass law_of_conservation_of_matter conservation_of_mass
Related terms: conservation
Similar spelling:   conservation_of_mass
  conservation_of_energy
  conservation_of_momentum
  conservation_of_parity
  conservation_of_charge