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 Respiratory \Re*spir"a*to*ry\ (r?*sp?r"?*t?*r? or r?s"p?*r?-),
   a. (Physiol.)
   Of or pertaining to respiration; serving for respiration; as,
   the respiratory organs; respiratory nerves; the respiratory
   function; respiratory changes.
   [1913 Webster]

   {Respiratory foods}. (Physiol.) See 2d Note under {Food}, n.,
      1.

   {Respiratory tree} (Zool.), the branched internal gill of
      certain holothurians.
      [1913 Webster]