Coulometers

cou;lo;me;ter pronunciation: function: noun etymology: alteration of coulombmeter, from coulomb + -meterdate: circa 1889 : an instrument of chemical analysis that determines the amount of a substance released in electrolysis by measurement of the quantity of electricity used— cou;lo;met;ric adjective — cou;lo;met;ri;cal;ly adverb — cou;lom;e;try noun