n. [ Thermo- + -scope. ] (Physics) An instrument for indicating changes of temperature without indicating the degree of heat by which it is affected; especially, an instrument contrived by Count Rumford which, as modified by Professor Leslie, was afterward called the differential thermometer. [ 1913 Webster ]
a. [ Thermo- + stable fixed. ] (Physiol. Chem.) Capable of being heated to or somewhat above 55° C. without loss of special properties; -- said of proteins, immune substances, etc. [ Webster 1913 Suppl. ]
n. [ Thermo- + Gr. &unr_; to make to stand. ] (Physics) A device which automatically regulates temperature, or provides a signal used by another device to regulate temperature. The temperature-sensitive signal may be electronic, as that produced by a thermocouple. The signal may also be caused mechanically, as by the unequal expansion of different metals, liquids, or gases by heat, which can then cause the opening or closing of the damper of a stove, or the like, as the heat becomes greater or less than is desired. [ 1913 Webster +PJC ]
(adj) having the property of becoming permanently hard and rigid when heated or cured, Syn.thermoset, Ant.thermoplastic, Example: the phenol resins and plastics were the original synthetic thermosetting materials
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