respiration

  1. Noun.  The process of inhaling and exhaling; breathing, breath.
  2. Noun.  An act of breathing; a breath.
  3. Noun.  Any similar process, in organisms that lack lungs, that exchanges gases with its environment.
  4. Noun.  The process by which cells obtain chemical energy by the consumption of oxygen and the release of carbon dioxide.

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This entry was last updated on RefTopia from its source on 3/20/2012.