Sensor

Pronunciation: /ˈsɛnsər/

Sensor (noun)

  1. A device that notices a change in the environment and sends information to another system.
  2. A part in a machine that measures conditions and helps control how the machine works.
  3. A body structure that detects a stimulus and starts a response in the nervous system.

Examples

  • The sensor detects physical change in the air.
  • A sensor detects physical change when temperature shifts.