Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

detector

play
noun de·tec·tor \di-ˈtek-tər\

Simple Definition of detector

  • : a device that can tell if a substance or object is present : a device that detects the presence of something

Full Definition of detector

  1. :  one that detects: as a :  a device for detecting the presence of electromagnetic waves or of radioactivity b :  a rectifier of high-frequency current used especially for extracting the intelligence from a radio signal

Examples of detector

  1. using metal detectors to improve safety at airports

  2. <a motion detector to thwart burglaries>



1541

First Known Use of detector

1541


Medical Dictionary

detector

play
noun de·tec·tor \di-ˈtek-tər\

Medical Definition of detector

  1. :  one that detects; especially :  a device for detecting the presence of electromagnetic waves or of radioactivity





Seen and Heard

What made you want to look up detector? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

February 11, 2016

the holder of an office

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image33683556

How much does a batman (the Turkish unit of measurement) weigh?

100 pounds 2.2 pounds 196.5 pounds 16.96 pounds
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ