voltage

Definition

The difference in electrostatic potential between two points in space, especially between live and neutral conductors or the earth.

Etymology

From volt + -age, ultimately derived from the name of Alessandro Volta, inventor of the modern battery.

Example Sentences

• "The voltage between the wires is too low to produce a spark."
• "Be careful when opening high-voltage equipment."
• "The system voltage is 630 volts d.c. and the supply to the trains is by top-contact third rail with running rail return."