Sensor

usgb/ˈsensər/
noun

A device that detects or measures a physical property and records, indicates, or otherwise responds to it.

The alarm system had sensors installed to detect movement.
Visual representation of "sensor" - A device that detects or measures a physical property and records, indicates, or otherwise responds to it.

Often appears as...

  • motion sensor
  • temperature sensor

Usage tips

Technical

Definition 1 of 3
Visual representation of "sensor"
LampPro Tip 1/3

Detect and Respond

Sensors are not just passive; they actively respond to changes they detect.

Illustration for Detect and Respond
The floodlight turns on automatically because its sensor responds to movement.
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Various Forms

Sensors can be visible gadgets or hidden within devices.

Illustration for Various Forms
Cars have multiple hidden sensors to monitor engine performance.
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Technical Vocabulary

The word 'sensor' is often found in technical or specialized discussions.

Illustration for Technical Vocabulary
During the tour of the space station, the guide explained how each sensor worked.
Visual representation of the word "Sensor"

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