de·​tec·​tor | \ di-ˈtek-tər How to pronounce detector (audio) \

Definition of detector

: one that detects: such 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

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Synonyms for detector



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Examples of detector in a Sentence

using metal detectors to improve safety at airports a motion detector to thwart burglaries

Recent Examples on the Web

Breakfast is provided, and amenities include towels and linens, hair dryer and carbon monoxide detector. CBS News, "So you want to spend the night in a Wienermobile," 18 July 2019 In June, the House Financial Services Committee unanimously approved a separate bill requiring carbon monoxide detectors in public housing, including $300 million in funding. NBC News, "Senators introduce bipartisan bill to require carbon monoxide detectors in public housing," 18 July 2019 The study's authors also emphasize that more muon detectors will need to be installed, in particular on the western slope of the fortress, in order to obtain a full-size underground picture. Fox News, "Scientists may have found one of the oldest Christian churches in the world," 12 July 2019 Detectives were at the scene of the shooting, Friday, collecting evidence and using a metal detector to search for bullet casings in the grass. Wayne K. Roustan,, "Man fatally shot in the back in Sunrise, police say," 5 July 2019 Initially, children slamming their locker doors were setting off the gunshot detector. Jack Gillum, ProPublica, "Aggression Detectors: The Unproven, Invasive Surveillance Technology Schools Are Using to Monitor Students," 25 June 2019 Today, their house is a fortress, outfitted with security cameras and motion detectors that alert Avi and Luna’s phones when anyone sets foot on their property. Deanna Pan,, "‘I can’t be naive anymore’: Targeted by arson fires, Mass. rabbis face anti-Semitism at home," 24 June 2019 Early Friday morning, a man walked up to a DTW security checkpoint, took off his clothes, and removed a security barrier to approach a metal detector. Emma Keith, Detroit Free Press, "Naked man stopped trying to get through security at Detroit Metro Airport," 21 June 2019 Other winners include a detector called POLAR-2, a more powerful follow-up to a sensor launched on Tiangong-2 to study the polarization of energetic γ-ray bursts from distant cosmic phenomena. Elizabeth Gibney, Scientific American, "China Reveals Scientific Experiments for Next Space Station," 19 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'detector.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of detector

1541, in the meaning defined above

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Statistics for detector

Last Updated

22 Jul 2019

Look-up Popularity

Time Traveler for detector

The first known use of detector was in 1541

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More Definitions for detector



English Language Learners Definition of detector

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


de·​tec·​tor | \ di-ˈtek-tər How to pronounce detector (audio) \

Medical Definition of detector

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

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More from Merriam-Webster on detector

Rhyming Dictionary: Words that rhyme with detector

Thesaurus: All synonyms and antonyms for detector

Spanish Central: Translation of detector

Nglish: Translation of detector for Spanish Speakers Encyclopedia article about detector

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