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thermogalvanometer

American  
[thur-moh-gal-vuh-nom-i-ter] / ˌθɜr moʊˌgæl vəˈnɒm ɪ tər /

noun

Electricity.
  1. a thermoammeter for measuring small currents, consisting of a thermocouple connected to a direct-current galvanometer.


Etymology

Origin of thermogalvanometer

First recorded in 1865–70; thermo- + galvanometer