Definition of ventilator noun from the Oxford Advanced American Dictionary

     

    ventilator

     noun
    noun
    NAmE//ˈvɛntlˌeɪt̮ər//
     
     
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  1. 1a device or an opening for letting fresh air come into a room, etc.
  2. 2a piece of equipment with a pump that helps someone to breathe by sending air in and out of their lungs He was put on a ventilator.
See the Oxford Advanced Learner's Dictionary entry: ventilator