Part 244

{ Ther`mo*an`æs*the"si*a or -an`es*the"si*a } (?), n. [NL.] (Med.) Loss of power to distinguish heat or cold by touch.

Ther`mo*bar"o*graph (?), n. (Physics) An instrument for recording simultaneously the pressure and temperature of a gas; a combined thermograph and barograph.

Ther`mo*ba*rom"e*ter, n. A siphon barometer adapted to be used also as a thermometer.

Ther`mo*chro"ic (?), a. [Thermo- + Gr. &?;, &?;, color.] Pert. to or designating heat rays that have undergone selective absorption and are therefore analogous to colored light rays.

Ther"mo*cou`ple (?), n. A thermoelectric couple.

Ther"mo*cur`rent (?), n. (Physics) A current developed or set in motion by heat; specif., an electric current, in a heterogeneous circuit, due to differences of temperature between the junctions of the substances of which the circuit is composed.

Ther"mo*din (?), n. [G., fr. Gr. &?; heat.] (Pharm.) A white crystalline substance derived from urethane, used in medicine as an antipyretic, etc.

{ Ther`mo*e*lec"tric couple or pair } (?). (Elec.) A union of two conductors, as bars or wires of dissimilar metals joined at their extremities, for producing a thermoelectric current.

Ther"mo*gram (?), n. (Physics) The trace or record made by means of a thermograph.

Ther*mog"ra*phy (?), n. [Thermo- + -graphy.] Any process of writing involving the use of heat.

Ther`mo*junc"tion (?), n. (Elec.) A junction of two dissimilar conductors used to produce a thermoelectric current, as in one form of pyrometer; a thermocouple.

Ther`mo*lu`mi*nes"cence (?), n. (Physics) Luminescence exhibited by a substance on being moderately heated. It is shown esp. by certain substances that have been exposed to the action of light or to the cathode rays. -- -lu`mi*nes"cent (#), a.

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Ther`mo*lyt"ic (?), a. Of or pertaining to thermolysis.

Ther`mo*mo"tor (?), n. A heat engine; a hot-air engine.

Ther`mo*neu*ro"sis (?), n. [NL.] (Med.) (a) A neurosis caused by exposure to heat. (b) A neurosis causing rise or fall of a body's temperature.

Ther`mo*neu*tral"i*ty (?), n. (Chem.) Neutrality as regards heat effects.

Ther`mo*phil"ic (?), a. [Thermo- + Gr. &?; loving + -ic.] Heat-loving; -- applied esp. to certain bacteria.

Ther"mo*phone (?), n. [Thermo- + phone.] 1. A portable form of telethermometer, using a telephone in connection with a differential thermometer.

2. A telephone involving heat effects, as changes in temperature (hence in length) due to pulsations of the line current in a fine wire connected with the receiver diaphragm.

Ther"mo*phore (?), n. [Thermo- + Gr. &?; -bearing, fr. &?; to bear.] An apparatus for conveying heat, as a case containing material which retains its heat for a considerable period.

Ther`mo*reg"u*la`tor (?), n. (Physics) A device for the automatic regulation of temperature; a thermostat.

Ther`mo*si"phon (?), n. An arrangement of siphon tubes for assisting circulation in a liquid.

Ther`mo*sta"ble (?), a. [Thermo- + stable fixed.] (Physiol. Chem.) Capable of being heated to or somewhat above 55° C. without loss of special properties; -- said of immune substances, etc.

Ther`mo*tac"tic (?), a. (Physiol.) Of or retaining to thermotaxis.

Ther"mo*tank (?), n. [Thermo- + ank.] A tank containing pipes through which circulates steam, water, air, or the like, for heating or cooling; -- used in some heating and ventilation systems.

Ther`mo*tax"is (?), n. [NL.; thermo- + Gr. &?; an arranging.] (Physiol.) (a) The property possessed by protoplasm of moving under the influence of heat. (b) Determination of the direction of locomotion by heat.

Ther`mo*ten"sile (?), a. Pertaining to the variation of tensile strength with the temperature.