detector

noun

de·tec·tor di-ˈtek-tər

Synonyms of detector next

: one that detects: such as

: a device for detecting the presence of electromagnetic waves or of radioactivity

: a rectifier of high-frequency current used especially for extracting the intelligence from a radio signal

Example Sentences

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

Recent Examples on the Web Advertisement The takeaway for you: Be wary of treating any AI detector like fact. —

Geoffrey A. Fowler, Washington Post, 2 June 2023 Thankfully, wireless devices all emit radio frequencies that are relatively easy to pinpoint, and basic RF detectors are available for around $50. —

Matt Crisara, Popular Mechanics, 26 May 2023 Between its friendly voice and Split Spectrum Sensor, Google's smoke/CO detector warns you when and where there's danger. —

Stephanie Mlot, PCMAG, 16 May 2023 Interactive exhibits include a counterfeit currency detector and the old favorite, a transparent cube holding $1 million. —

Chicago Tribune Staff, Chicago Tribune, 5 May 2023 The railroad announced plans Monday to improve the use of detectors along railroad tracks to spot overheating bearings and other problems in response to the derailment in Ohio last month. —

Mirna Alsharif, NBC News, 7 Mar. 2023 Investigators said the crew on the train got a warning from a hot-bearing detector shortly before the derailment, but didn't have time to react. —

Harold Maass, The Week, 7 Mar. 2023 The level and pulse detectors were registered as intellectual property through the African Regional Intellectual Property Organization. —

IEEE Spectrum, 17 May 2023 The 80 detectors will be distributed to vehicles at 52 Fire-Rescue stations throughout the city. —

Rob Nikolewski, San Diego Union-Tribune, 10 May 2023 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'detector.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1541, in the meaning defined above

Time Traveler

The first known use of detector was in 1541

See more words from the same year

Cite this Entry

Style

“Detector.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/detector. Accessed 9 Jun. 2023.

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Kids Definition

detector

noun

de·tec·tor di-ˈtek-tər

: one that detects or warns

a smoke detector

: a device in a radio receiver for changing the high-frequency current of radio waves into current that can vibrate a loudspeaker to reproduce the original sound