Main Entry: elec·trom·e·ter

Pronunciation: \i-ˌlek-ˈträm-ət-ər\

Function: noun

: any of various instruments for detecting or measuring electric-potential differences or ionizing radiations by means of the forces of attraction or repulsion between charged bodies

—elec·tro·met·ric \-trə-ˈme-trik\ adjective