galvanoscope

noun

gal·​va·​no·​scope gal-ˈva-nə-ˌskōp  ˈgal-və-nə- 

: an instrument for detecting the presence and direction of an electric current by the deflection of a magnetic needle

Word History

Etymology

borrowed from French, from galvano- (in galvanomètre galvanometer) + -scope -scope

First Known Use

1832, in the meaning defined above

Medical Definition

galvanoscope

noun

gal·​va·​no·​scope gal-ˈvan-ə-ˌskōp  ˈgal-və-nə- 

: an instrument for detecting the presence and direction of an electric current by the deflection of a magnetic needle