[ dih-tek-shuh n ]
/ dɪˈtɛk ʃən /


the act of detecting.
the fact of being detected.
discovery, as of error or crime: chance detection of smuggling.
  1. rectification of alternating signal currents in a radio receiver.
  2. Also called demodulation. the conversion of an alternating, modulated carrier wave or current into a direct, pulsating current equivalent to the transmitted information-bearing signal.

Nearby words

  1. detain,
  2. detainee,
  3. detainer,
  4. detect,
  5. detectable,
  6. detective,
  7. detector,
  8. detectorist,
  9. detent,
  10. detente

Origin of detection

1425–75; late Middle English < Late Latin dētēctiōn- (stem of dētēctiō), equivalent to Latin dētēct(us) (see detect) + -iōn- -ion

Related formspre·de·tec·tion, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for detection

British Dictionary definitions for detection


/ (dɪˈtɛkʃən) /


the act of discovering or the fact of being discovereddetection of crime
the act or process of extracting information, esp at audio or video frequencies, from an electromagnetic waveSee also demodulation
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for detection



early 15c., "exposure, accusation," from Latin detectionem (nominative detectio) "an uncovering," noun of action from past participle stem of detegere (see detect).

Online Etymology Dictionary, © 2010 Douglas Harper