Dictionary.com
Thesaurus.com

thermoammeter

American  
[thur-moh-am-mee-ter] / ˌθɜr moʊˈæmˌmi tər /

noun

Electricity.
  1. an ammeter that measures amperage by means of a thermocouple.


Etymology

Origin of thermoammeter

First recorded in 1890–95; thermo- + ammeter