1) Meter 1) Millivoltmeter 
A voltmeter is an instrument used for measuring electrical potential difference between two points in an electric circuit. Analog voltmeters move a pointer across a scale in proportion to the voltage of the circuit; digital voltmeters give a numerical display of voltage by use of an analog to digital converter. Voltmeters are made in a wide range ...
instrument for measuring electrical potential
• (n.) An instrument for measuring in volts the differences of potential between different points of an electrical circuit.
instrument that measures voltages of either direct or alternating electric current on a scale usually graduated in volts, millivolts (0.001 volt), ...
An instrument used to measure the voltage between two points in an electric circuit. The voltage can be measured by allowing it to pass a current through a resistance. An important feature of a voltmeter is that it should disturb the circuit as little as possible; hence, it should draw a minimum of ...
instrument intended to measure the value of a voltage
Measures the voltage flowing through a circuit. 
<chemistry> An instrument that measures cell potential by drawing electric current through a known resistance. ... (09 Jan 1998) ... 
(vōlt´me-tәr) an instrument for measuring electromotive force in volts.
Volt'me`ter noun [ 2d volt + - meter .] (elec.) An instrument for measuring in volts the differences of potential between different points of an electrical circuit. 
an instrument that measures electrical pressure (EMF, voltage) in electrical circuits.
Type: Term Pronunciation: vōlt′mē-tĕr Definitions: 1. An apparatus for measuring the electromotive force or difference of potential.
A voltmeter is an instrument for measuring electro-motive force, or pressure in volts. The early voltmeters of the mid-19th century were called voltameters, and worked by passing the current through a graduated tube nearly filled with a solution of sulphuric acid and water. The strength of the current was then indicated by the taye of decomposition...
It is an electrical instrument which measures voltage.
[n] - meter that measures the potential difference between two points
A device for measuring voltage across a component in a circuit. See also: Volt, Voltage.
A device for measuring electromotive force* or potential difference*.
An instrument used to measure voltage. 
noun meter that measures the potential difference between two points
Instrument for measuring the potential difference (voltage) between two points in a circuit. It should not be confused with an ammeter, which measures current. A voltmeter has a high internal resistance (so that it passes only a small current), and is connected in parallel with the component across which potential difference is to be measured –.....