#breathing_device__breathingdevice__breathingapparatu__breathing_machine__breathingmachine__ventilator  a device that facilitates breathing in cases of respiratory failure
  supertype:  device  an instrumentality invented for a particular purpose; "the device is small enough to wear on your wrist"; "a device intended to conserve water"
  subtype:  aqualung__Aqua-Lung__scuba  a device (trade name Aqua-Lung) that lets divers breathe under water; scuba is acronym for Self Contained Underwater Breathing Apparatus
  subtype:  oxygen_mask  a breathing device that is placed over the mouth and nose; supplies oxygen from an attached storage tank
  subtype:  respirator__inhalator  a breathing device for administering long-term artificial respiration
     subtype:  iron_lung  respirator that produces alternations in air pressure in a chamber surrounding a patient's chest to force air into and out of the lungs thus providing artificial respiration
  subtype:  resuscitator  a breathing apparatus used for resuscitation by forcing oxygen into the lungs of a person who has undergone asphyxia or arrest of respiration
  subtype:  snorkel  breathing device consisting of a bent tube fitting into a swimmer's mouth and extending above the surface; allows swimmer to breathe while face down in the water

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