galvanometer
noun
gal·va·nom·e·ter ˌgal-və-ˈnä-mə-tər 
: an instrument for detecting or measuring a small electric current by movements of a magnetic needle or of a coil in a magnetic field
galvanometric
ˌgal-və-nō-ˈme-trik
adjective 
Example Sentences
Recent Examples on the Web These red rays fall on two thin gold leaves attached to the wires of a tiny galvanometer. 
Popular Mechanics Editors, Popular Mechanics, 17 Dec. 2020 The Cybraphon’s emotions are accessible via a Twitter feed but also appear on a on a 100 year-old galvanometer housed in the wardrobe (pictured above). Priya Ganapati, WIRED, 31 July 2009
Popular Mechanics Editors, Popular Mechanics, 17 Dec. 2020 The Cybraphon’s emotions are accessible via a Twitter feed but also appear on a on a 100 year-old galvanometer housed in the wardrobe (pictured above). Priya Ganapati, WIRED, 31 July 2009 Word History
Etymology
galvan(ic) + -o- + -meter
Note: Term apparently introduced by the British scientist William Haseldine Pepys (1775-1856) in "Description of a newly invented Galvanometer, and an Account of some Experiments with Voltaʼs Pile upon several of the Gases," The Philosophical Magazine, vol. 10 (1801), pp. 38-42.
First Known Use
1802, in the meaning defined above
Medical Definition
galvanometer
noun
gal·va·nom·e·ter ˌgal-və-ˈnäm-ət-ər
: an instrument for detecting or measuring a small electric current by movements of a magnetic needle or of a coil in a magnetic field