Definition of "ventilation" in English

noun

1. The replacement of stale or noxious air with fresh.

   • So you punched out a window for ventilation. Was that before or after you noticed you were standing in a lake of gasoline?

2. The mechanical system used to circulate and replace air.

3. An exchange of views during a discussion.

4. The public exposure of an issue or topic.

5. The bodily process of breathing; the inhalation of air to provide oxygen, and the exhalation of spent air to remove carbon dioxide.

6. (medicine) The mechanical system used to assist breathing.