Conduction /(kŏn*dŭk"shŭn)/

Con·duc·tion

Conduction

n.
  1. The act of leading or guiding.
  2. The act of training up. [Obs.]
  3. Transmission through, or by means of, a conductor; also, conductivity. (Physics)
    [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.