Learn That Word

Synonyms for Ventilation (same or very similar meaning)

WordNet sense 1 (free and open discussion of (or debate on) some question of public interest):
public discussion

WordNet sense 2 (a mechanical system in a building that provides fresh air):
ventilating system, ventilation system

WordNet sense 3 (the bodily process of inhalation and exhalation; the process of taking in oxygen from inhaled air and releasing carbon dioxide by exhalation):
breathing, respiration, external respiration

WordNet sense 4 (the act of supplying fresh air and getting rid of foul air):

From the ODE community, based on WordNetadd/edit