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.

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.

Source: Webster's Revised Unabridged Dictionary (1913)