"ventilation" in the noun sense
1. ventilation, airing
the act of supplying fresh air and getting rid of foul air
2. ventilation, ventilation system, ventilating system
a mechanical system in a building that provides fresh air
"she was continually adjusting the ventilation"
3. public discussion, ventilation
free and open discussion of (or debate on) some question of public interest
"such a proposal deserves thorough public discussion"
4. breathing, external respiration, respiration, ventilation
the bodily process of inhalation and exhalation the process of taking in oxygen from inhaled air and releasing carbon dioxide by exhalation
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