What does ventilation mean?
• VENTILATION (noun) The noun VENTILATION has 4 senses: 1. the act of supplying fresh air and getting rid of foul air 2. a mechanical system in a building that provides fresh air 3. free and open discussion of (or debate on) some question of public interest 4. the bodily process of inhalation and exhalation; the process of taking in oxygen from inhaled air and releasing carbon dioxide by exhalation Familiarity information: VENTILATION used as a noun is uncommon.