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Definition of respirator noun from the Oxford Advanced American Dictionary

     

    respirator

     noun
    noun
    NAmE//ˈrɛspəˌreɪt̮ər//
     
     
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  1. 1a piece of equipment that makes it possible for someone to breathe over a long period when they are unable to do so naturally She was put on a respirator.
  2. 2a device worn over the nose and mouth to allow someone to breathe in a place where there is a lot of smoke, gas, etc.
See the Oxford Advanced Learner's Dictionary entry: respirator