1. thermocouple

noun. a kind of thermometer consisting of two wires of different metals that are joined at both ends; one junction is at the temperature to be measured and the other is held at a fixed lower temperature; the current generated in the circuit is proportional to the temperature difference.


  • thermocouple junction


  • dry-bulb thermometer

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Sentences with thermocouple

1. Noun, singular or mass
This may also happen if the thermocouple is too far away from the pilot light.

2. Adjective
If the flame lights and goes out when you release the gas control knob after holding it in for the recommended 20 to 30 seconds, that's the sign of a thermocouple malfunction.