#nitrogen__N__atomic_number_7  a common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas; constitutes 78 percent of the atmosphere by volume; a constituent of all living tissues
  supertype:  #chemical_element  #gas
  substance of:  #air
  subtype:  #azote  an obsolete name for nitrogen
  subtype:  #liquid_nitrogen  nitrogen in a liquid state

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