Defn: Capable of being heated to or somewhat above 55º C. without loss of special properties; — said of immune substances, etc.

THERMOSTAT
Ther"mo*stat, n. Etym: [Thermo- + Gr. (Physics)

Defn: A self-acting apparatus for regulating temperature by the unequal expansion of different metals, liquids, or gases by heat, as in opening or closing the damper of a stove, or the like, as the heat becomes greater or less than is desired.

THERMOSTATIC
Ther`mo*stat"ic, a. (Physics)

Defn: Of or pertaining to the thermostat; made or effected by means of the thermostat.

THERMOSYSTALTIC
Ther`mo*sys*tal"tic, a. Etym: [Thermo- + systalic.] (Physiol.)

Defn: Influenced in its contraction by heat or cold; — said of a muscle.

THERMOTACTIC
Ther`mo*tac"tic, a. (Physiol.)

Defn: Of or retaining to thermotaxis.

THERMOTANK
Ther"mo*tank, n. [Thermo- + ank.]