'Voltage' definitions:

Definition of 'voltage'

From: WordNet
noun
The rate at which energy is drawn from a source that produces a flow of electricity in a circuit; expressed in volts [syn: voltage, electromotive force, emf]
noun
The difference in electrical charge between two points in a circuit expressed in volts [syn: electric potential, potential, potential difference, potential drop, voltage]

Definition of 'Voltage'

From: GCIDE
  • Voltage \Vol"tage\, n. (Elec.) Electric potential or potential difference, expressed in volts. [1913 Webster]