a masklike device, usually of gauze, worn over the mouth, or nose and mouth, to prevent the inhalation of noxious substances or the like.
British. gas mask.
Medicine/Medical. an apparatus to produce artificial respiration.
an apparatus for providing long-term artificial respiration
Also called gas mask. a device worn over the mouth and nose to prevent inhalation of noxious fumes or to warm cold air before it is breathed

respirator res·pi·ra·tor (rěs’pə-rā’tər)

A device that supplies oxygen or a mixture of oxygen and carbon dioxide for breathing, used especially in artificial respiration. Also called inhalator.

A screenlike device worn over the mouth or nose or both to protect the respiratory tract.


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  • Respiratory

    adjective 1. pertaining to or serving for respiration: respiratory disease. adjective 1. of, relating to, or affecting respiration or the organs used in respiration respiratory res·pi·ra·to·ry (rěs’pər-ə-tôr’ē, rĭ-spīr’ə-) adj. Of, relating to, used in, or affecting respiration.

  • Respiratory acidosis

    respiratory acidosis n. Acidosis that is caused by retention of carbon dioxide, due to inadequate pulmonary ventilation or hypoventilation, and that results in a decrease in blood pH unless compensated for by renal retention of bicarbonate.

  • Respiratory alkalosis

    respiratory alkalosis n. Alkalosis resulting from abnormal loss of carbon dioxide due to hyperventilation.

  • Respiratory bronchiole

    respiratory bronchiole n. The smallest subdivision of a bronchiole, connecting a terminal bronchiole to an alveolar duct.

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