ventilation

Noun

• the bodily process of inhalation and exhalation; the process of taking in oxygen from inhaled air and releasing carbon dioxide by exhalation

• free and open discussion of (or debate on) some question of public interest
  • such a proposal deserves thorough public discussion
    

• a mechanical system in a building that provides fresh air
  • she was continually adjusting the ventilation
    

• the act of supplying fresh air and getting rid of foul air

Related words

• Synonyms: 
  breathing , external respiration , respiration , public discussion , ventilation system , ventilating system , airing