noun Electricity.
- an instrument for measuring current in amperes.
noun
- an instrument for measuring an electric current in amperes
instrument for measuring the strength of electric currents, 1882, from ampere + -meter.
- An instrument that measures the strength of an electric current, indicating it in amperes. Ammeters typically include a galvanometer; digital ammeters typically include A/D converters as well. Compare ohmmeter voltmeter.