ventilation

1. The replacement of stale or noxious air with fresh. (countable, uncountable)
2. The mechanical system used to circulate and replace air. (countable, uncountable)
3. An exchange of views during a discussion. (countable, uncountable)
4. The public exposure of an issue or topic. (countable, uncountable)
5. The bodily process of breathing; the inhalation of air to provide oxygen, and the exhalation of spent air to remove carbon dioxide. (countable, uncountable) · This toxin impairs ventilation by causing inflammation in the bronchioles.

Plural ventilations