Definition of "electrometer" [e•lec•trom•e•ter]

• An instrument for measuring voltage. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Her sensitive awareness to subtle natural effects were such that Samuel Taylor Coleridge, William's friend and fellow poet, considered her to be the equivalent of a perfect "electrometer" -- a "fragile piece of gold" able to measure tiny changes in electrical pulses."
• "In the mid-1880s, Pierre Curie had used minuscule quartz crystals to craft an instrument called an electrometer, capable of measuring exquisitely small doses of energy."
• "In the Memoirs of the Roman Academy of Sciences for 1857 he published a description of his new divided ring electrometer, which is based on the old electroscope of Bohnenberger and since then he has introduced"