electrometer

UK: /ɪlɛkˈtrɒmɪtə/ US: (i lek trom′i tər, ē′lek-)

WordReference Random House Unabridged Dictionary of American English © 2026

e•lec•trom•e•ter  (i lek trom′i tər, ē′lek-), n. 

1. Electricity a calibrated device used for measuring extremely low voltages.

• 1945–50; electro- + -meter

e•lec•tro•met•ric  (i lek′trō me′trik), e•lec′tro•met′ri•cal, adj.  e•lec′tro•met′ri•cal•ly, adv. 
e•lec•trom′e•try, n. 

Collins Concise English Dictionary © HarperCollins Publishers::

electrometer / ɪlɛkˈtrɒmɪtə ˌiːlɛk-/ noun

1. an instrument for detecting or determining the magnitude of a potential difference or charge by the electrostatic forces between charged bodies

electrometric / ɪˌlɛktrəʊˈmɛtrɪk/, eˌlectroˈmetrical adjective

elecˈtrometry noun