de·​tec·​tion | \ di-ˈtek-shən How to pronounce detection (audio) \

Definition of detection

1 : the act of detecting : the state or fact of being detected
2 : the process of demodulating

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Examples of detection in a Sentence

I don't know how the errors managed to avoid detection for so long. my detection of the scent of baked apple pie led me to the kitchen
Recent Examples on the Web From the discovery of the Higgs boson to the detection of gravitational waves, recent findings in physics have required a staggering level of precision. Scott Hershberger, Scientific American, "How Long Do Neutrons Live? Space Probe Could Put Debate to Rest," 25 June 2020 These days, the detection of colliding black holes verges on routine, and astronomers know what to do: Go back to sleep. Marina Koren, The Atlantic, "Black Holes Might Be Lighting Up," 25 June 2020 Prior to this detection, some astronomers had explored how black hole mergers may result in light flares. Ashley Strickland, CNN, "Astronomers may have detected light from colliding black holes for the first time," 25 June 2020 On Tuesday morning, hours before Rodriguez’ plea, members of Congress pledged to advance a bundle legislation known as HR 2, The Moving Forward Act, that would require detection and alert technology in all new cars. Nancy Cutler, USA TODAY, "Father pleads guilty, avoids jail time after twins toddlers' died in hot car," 24 June 2020 Perroy is using high-resolution cameras and other sensors to improve early detection of the disease and map the likely progression. Rene Ebersole, National Geographic, "National parks are being overrun by invasive species," 24 June 2020 Oura has partnered with the West Virginia University Rockefeller Neuroscience Institute (RNI) to determine if the ring could be used for early COVID-10 detection. oregonlive, "NBA offering players ‘smart’ rings that could detect coronavirus symptoms early: Report," 23 June 2020 Facebook even has image-manipulation detection technology. Emma Grey Ellis, Wired, "How to Spot Phony Images and Online Propaganda," 17 June 2020 Facebook touts the use of its object detection algorithms in mineral mining application. Jeremy Kahn, Fortune, "Privacy-preserving A.I. is the future of A.I.," 16 June 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'detection.' 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 detection

15th century, in the meaning defined at sense 1

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Time Traveler for detection

Time Traveler

The first known use of detection was in the 15th century

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Last Updated

30 Jun 2020

Cite this Entry

“Detection.” Dictionary, Merriam-Webster, Accessed 9 Jul. 2020.

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More Definitions for detection


How to pronounce detection (audio)

English Language Learners Definition of detection

: the act or process of discovering, finding, or noticing something


de·​tec·​tion | \ di-ˈtek-shən How to pronounce detection (audio) \

Kids Definition of detection

: the act of learning that something or someone is or was there : discovery The clever thief escaped detection.

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