Word.ws English Dictionary

motion detector

motion detector noun: a device used in security systems that can alert the user of the presence of a moving object.

Noun

motion detector (plural motion detectors)

  1. A device used in security systems that can alert the user of the presence of a moving object.
    • Higman and his sidekick, a geophysical engineering student named Krishna Divakarla from the Colorado School of Mines, are the volunteer cavalry. They are planting homemade motion detectors on the quivering slopes.2026 February 27, Paul Salopek, “Hazard Cascade”, in National Geographic

Forms of motion detector

pluralmotion detectors

Questions about motion detector

What does motion detector mean?
Motion detector means a device used in security systems that can alert the user of the presence of a moving object.
What part of speech is motion detector?
Motion detector is a noun.
What is the plural of motion detector?
The plural of motion detector is motion detectors.

Words near motion detector in the dictionary

  1. motion controllers
  2. motion dazzle
  3. motion design
  4. motion designer
  5. motion designers
  6. motion detector
  7. motion detectors
  8. motion discomfort
  9. motion lotion
  10. motion of confidence
  11. motion of no confidence

Source and license

Adapted from Wiktionary: motion detector (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “motion detector.” Word.ws, https://word.ws/motion_detector. Based on Wiktionary, CC BY-SA 4.0.