thermistorn.

1940 G. L. Pearson in Physical Rev. 57 1065/2 Thermistor is a contraction of the words ‘thermal resistor’ and designates an electrical resistance whose value is markedly dependent on its temperature.

1955 Sci. Amer. Oct. 50/3 The heart of the instrument is a flake of metallic oxides called a thermistor, whose conduction of electric current is increased when it is heated. An amplifying and recording system translates this conductivity into a temperature reading.

1962 New Scientist 15 Mar. 638/3 The usual method of measuring the temperature in a borehole from the surface involves the use of thermistor probes.

1973 Sci. Amer. Feb. 42/3 The thermistor that sensed the muscle temperature was in the tip of the harpoon and the one that sensed the water temperature was attached to the transmitter, outside the fish's body on the harpoon shaft.

1979 Guardian 8 Sept. 20/2 When the water in the panels becomes warm enough, a thermistor produces a signal which is interpreted by the control unit, so that a standard central heating pump takes the hot water from the panel to the bulk storage tank, and from there to the radiators.