The Collaborative International Dictionary of English v.0.48:

Conduction \Con*duc"tion\ (k[o^]n*d[u^]k"sh[u^]n), n. [L.
   conductio a bringing together: cf. F. conduction.]
   1. The act of leading or guiding. --Sir W. Raleigh.
      [1913 Webster]

   2. The act of training up. [Obs.] --B. Jonson.
      [1913 Webster]

   3. (Physics) Transmission through, or by means of, a
      conductor; also, conductivity.
      [1913 Webster]

            [The] communication [of heat] from one body to
            another when they are in contact, or through a
            homogenous body from particle to particle,
            constitutes conduction.               --Amer. Cyc.
      [1913 Webster]

WordNet (r) 3.0 (2006):

conduction
    n 1: the transmission of heat or electricity or sound [syn:
         conduction, conductivity]

Moby Thesaurus II by Grady Ward, 1.0:

61 Moby Thesaurus words for "conduction":
   communication, conductance, conductivity, conductor, contagion,
   convection, delivery, deportation, diapedesis, dielectric,
   diffusion, dissemination, electric conduction, export, exportation,
   expulsion, extradition, gas conduction, import, importation,
   insulator, interchange, ionic conduction, liquid conduction,
   metallic conduction, metastasis, metathesis, metempsychosis, mho,
   migration, mutual transfer, nonconductor, osmosis, passage,
   passing over, perfusion, photoconduction, semiconductor, spread,
   spreading, superconductivity, superconductor, transduction,
   transfer, transfer of property, transference, transfusion, transit,
   transition, translation, translocation, transmigration,
   transmigration of souls, transmission, transmittal, transmittance,
   transplacement, transplantation, transposal, transposition,
   travel