Perfusing

from The Collaborative International Dictionary of English v.0.48
Perfuse \Per*fuse"\ (p[~e]r*f[=u]z"), v. t. [imp. & p. p.
   {Perfused} (p[~e]r*f[=u]zd"); p. pr. & vb. n. {Perfusing}.]
   [L. perfusus, p. p. of perfundere to pour over; per + fundere
   to pour.]
   1. To suffuse; to fill full or to excess. --Harvey.
      [1913 Webster]

   2. To pass a liquid through or over; as, the isolated kidney
      was perfused with saline solution.
      [PJC]

   3. (Surgery) To pass (a liquid) through an organ.
      [PJC]
    

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