Dictionary
Thesaurus
Encyclopedia
Translator
Web
 
Help

motion detector

 - 1 dictionary result
Main Entry:  motion detector
Part of Speech:  n
Definition:  a device that is sensitive to movement, esp. used for security reasons or navigation aid; also called motion sensor
Example:  The motion detector turns on lights in the stairwell.
Dictionary.com's 21st Century Lexicon
Copyright © 2003-2009 Dictionary.com, LLC
Cite This Source
Search another word or see motion detector on Thesaurus | Reference
FacebookTwitterFollow us: