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]

WordNet (r) 3.0 (2006):

perfuse
    v 1: force a fluid through (a body part or tissue); "perfuse a
         liver with a salt solution"
    2: cause to spread or flush or flood through, over, or across;
       "The sky was suffused with a warm pink color" [syn:
       suffuse, perfuse]

Moby Thesaurus II by Grady Ward, 1.0:

59 Moby Thesaurus words for "perfuse":
   assign, bleed, carry over, communicate, consign, cup, deliver,
   deport, diffuse, disseminate, ease in, expel, export, extradite,
   give a transfusion, hand forward, hand on, hand over, impart,
   import, infuse, inject, inoculate, insert, insinuate, interject,
   introduce, intromit, leech, let blood, make over, metastasize,
   metathesize, pass, pass on, pass over, pass the buck, phlebotomize,
   pop in, put in, relay, set in, slip in, spread, stick in, switch,
   throw in, transfer, transfer property, transfuse, translate,
   translocate, transmit, transplace, transplant, transpose, tuck in,
   turn over, whip in