thermocouple junction
- noun
- Specialized
- A properly connected thermocouple junction is essential for accurate temperature readings.
Examples
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The technician installed a new thermocouple junction to monitor the heat in the furnace.
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The engineer explained how the thermocouple junction works to generate a current based on temperature differences.
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The ribbon thermocouple junction
Academic text (1994)
Synonyms
A device made of two different metal wires joined together that makes a small electric signal when temperatures differ
A point where two different metals meet and produce a small electric voltage when heated, used to measure temperature
Surface Forms
Morphology
The meaning is directly compositional: a 'thermocouple junction' is the connection point (junction) of a thermocouple device. If a learner knows 'thermocouple' (a temperature-measuring device using wires) and 'junction' (a connection/meeting point), the phrase's meaning follows predictably, so it is transparent even though it is technical.
Etymology
The noun thermocouple junction comes from a simple idea: thermo means 'heat', couple means two things joined, and junction is the place where they meet, and at that join two different metal wires make a tiny electric signal when the heat changes. So that joined point is used to 'measure temperature'.