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A device or piece of equipment to facilitate respiration. The word is used to describe a device to filter air or remove toxic and poisonous gases and fumes, i.e., a gas mask, or a machine to assist or replace the action of respiratory muscles, e.g., an iron lung or Drinker respirator, or the machine used in anesthesia when respiratory muscles are deliberately paralyzed during surgical procedures.

Subjects: Public Health and Epidemiology.

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