'Voltmeter' definitions:
Definition of 'voltmeter'
(from WordNet)
noun
Meter that measures the potential difference between two points
Definition of 'Voltmeter'
From: GCIDE
- Voltmeter \Volt"me`ter\, n. [2d volt + -meter.] (elec.) An instrument for measuring in volts the differences of potential between different points of an electrical circuit. [1913 Webster]