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ventilation

Pronunciation: /ˌvɛntɪˈleɪʃ(ə)n/

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Definition of ventilation

noun

[mass noun]

1the provision of fresh air to a room, building, etc.: ventilation of the mines had long been mechanized
Medicine the supply of air to the lungs, especially by artificial means.

2public discussion or examination of an opinion, issue, or complaint.

Origin:

late Middle English (in the sense 'current of air'): from Old French, or from Latin ventilatio(n-), from the verb ventilare (see ventilate). ventilation (sense 1) dates from the mid 17th century