Webster’s Revised Unabridged Dictionary · 1913
Conduction
Con·duc′tion (kŏn·dŭk′shŭn), n. [L. conductio a bringing together: cf. F. conduction.] 1. The act of leading or guiding. Sir W. Raleigh.
2. The act of training up. [Obs.] B. Jonson.
3. (Physics) Transmission through, or by means of, a conductor; also, conductivity.
[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.