(n.) An instrument for measuring the voltaic electricity passing through it, by its effect in decomposing water or some other chemical compound acting as an electrolyte.

VOM VTVM ammeter ampere-hour meter coulometer dynamometer expansion ammeter faradmeter galvanometer hysteresis meter magnetometer megohmmeter mhometer milliammeter moving-coil meter ohmmeter potentiometer thermoammeter thermocouple thermoelectrometer variometer voltameter voltmeter