noun ther·mo·relay \¦thər(ˌ)mō+\

Definition of thermorelay

  1. :  a device for detecting very small optical-lever deflections in which a reflected beam of radiation falls on a sensitive thermocouple so arranged as to measure very small deflections

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Origin and Etymology of thermorelay

therm- + relay

Seen and Heard

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to cast off or become cast off

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