gigavolttien
Gigavolts refer to a unit of electrical potential difference or electromotive force. The prefix "giga" signifies a factor of one billion (10^9). Therefore, one gigavolt (GV) is equal to one billion volts. This unit is used to describe extremely high voltages, typically encountered in specialized scientific and industrial applications.
For context, typical household electrical outlets operate at voltages measured in tens or hundreds of volts.