GNU Collaborative International Dictionary of English

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Found one definition

1.       
   Resuscitator (?), n. [L.]
   1. One who, or that which, resuscitates.
   
   [1913 Webster]
   
   
   2. Specifically: (Med.) A device which is used to force oxygen or a mixture of oxygen and other gases into the lungs of patients who are suffering from asphyxiation, to revive the patient and induce resumption of respiration.
   
   [PJC]