Definitions
1.nounThe replacement of stale or noxious air with fresh.
2.nounThe mechanical system used to circulate and replace air.
3.nounAn exchange of views during a discussion.
4.nounThe public exposure of an issue or topic.
5.nounThe bodily process of breathing; the inhalation of air to provide oxygen, and the exhalation of spent air to remove carbon dioxide.
6.nounThe mechanical system used to assist breathing.