electrometer

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e·lec·trom·e·ter

(ĕ-lek-tromĕ-tĕr)
A device for measuring the electromotive force (voltage) of a source of electricity.

e·lec·trom·e·ter

(ĕ-lek-tromĕ-tĕr)
A device for measuring the electromotive force (voltage) of a source of electricity.

electrometer (ēlektrom´ətur),

n an electrostatic instrument for measuring the potential difference between two points. In radiology, electrometers are used to measure changes in the potential of charged electrodes resulting from ionization occasioned by radiation.