Meanings
nounmotion detector (plural motion detectors)
plural motion detectors
- 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
Translations
Chinese Mandarin 動作感應器 /动作感应器
- 動作感應器 /动作感应器 (dòngzuò gǎnyīngqì)device used in security systems
Finnish liiketunnistin
- liiketunnistindevice used in security systems
German Bewegungsmelder
- Bewegungsmelderdevice used in security systems
Hungarian mozgásérzékelő
- mozgásérzékelődevice used in security systems
Irish brathadóir gluaiseachta
- brathadóir gluaiseachtadevice used in security systems
Italian sensore di movimento
- sensore di movimentodevice used in security systems
Russian дете́ктор движе́ния
- дете́ктор движе́ния (detéktor dvižénija)device used in security systems
Cite this entry
APA
motion detector. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/motion%20detector
MLA
“motion detector.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/motion%20detector. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “motion detector,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/motion%20detector.
Source: motion detector on Wiktionary, CC BY-SA 4.0.