Ventilation - Definition

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