1. a unit of electric current equal to one millionth of an ampere
Usage: technical; physics

Examples

• The sensitive instrument measured currents as small as 50 microamperes.
• The circuit drew only 10 microamperes of current.
• Medical devices often operate with currents measured in microamperes.
• The leak current was less than one microampere.
• Scientists use microamperes to measure tiny electrical signals in biological systems.
• The battery’s standby current consumption was 25 microamperes.