Thermal conductivity(Physics), the quantity of heat that passes in unit time through unit area of a plate whose thickness is unity, when its opposite faces differ in temperature by one degree. J. D. Everett. - - Thermometic conductivity(Physics), the thermal conductivity when the unit of heat employed is the heat required to raise a unit volume of the substance one degree.

Conductor
(Con*duct"or) n. [LL., a carrier, transporter, L., a lessee.]

1. One who, or that which, conducts; a leader; a commander; a guide; a manager; a director.

Zeal, the blind conductor of the will.
Dryden.

2. One in charge of a public conveyance, as of a railroad train or a street car. [U. S.]

3. (Mus.) The leader or director of an orchestra or chorus.

4. (Physics) A substance or body capable of being a medium for the transmission of certain forces, esp. heat or electricity; specifically, a lightning rod.

5. (Surg.) A grooved sound or staff used for directing instruments, as lithontriptic forceps, etc.; a director.

6. (Arch.) Same as Leader.

Prime conductor(Elec.), the largest conductor of an electrical machine, serving to collect, accumulate, or retain the electricity.

Conductory
(Con*duct"o*ry) a. [LL. conductorius.] Having the property of conducting. [R.]

Conductress
(Con*duct"ress) n. A woman who leads or directs; a directress.

2. To conduct one's self; to behave. [U. S.]

Conductibility
(Con*duct`i*bil"i*ty) n. [Cf. F. conductibilité.]

1. Capability of being conducted; as, the conductibility of heat or electricity.

2. Conductivity; capacity for receiving and transmitting.

Conductible
(Con*duct"i*ble) a. Capable of being conducted.

Conduction
(Con*duc"tion) 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.

Conductive
(Con*duct"ive) a. Having the quality or power of conducting; as, the conductive tissue of a pistil.

The ovarian walls . . . are seen to be distinctly conductive.
Goodale

Conductivity
(Con`duc*tiv"i*ty) n. The quality or power of conducting, or of receiving and transmitting, as heat, electricity, etc.; as, the conductivity of a nerve.


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