surveillance
noun
sur·veil·lance
sər-ˈvā-lən(t)s 
also
-ˈvāl-yən(t)s
or
-ˈvā-ən(t)s
: close watch kept over someone or something (as by a detective)
also
: supervision see also immune surveillance
Examples of surveillance in a Sentence
government surveillance of suspected terrorists
The bank robbery was recorded by surveillance video cameras.
Recent Examples on the Web
The swift police response and use of video surveillance technology proved crucial in identifying and apprehending the shooter.
—
Adeola Adeosun, MSNBC Newsweek, 21 Sep. 2025
Since 2022, the UK government has bought more than $350 million-worth of the company’s AR3 surveillance drones to send to Ukraine.
—Vasco Cotovio, CNN Money, 21 Sep. 2025
An increase in the use of colonoscopies as a surveillance tool has reduced the incidence of colorectal cancer.
—New Atlas, 21 Sep. 2025
To wander without intent, without surveillance, without the anticipation of acquisition and without expectation that the walk might benefit anything other than our freedom of spirit.
—Paul Greenberg, Time, 20 Sep. 2025
See All Example Sentences for surveillance
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Adeola Adeosun, MSNBC Newsweek, 21 Sep. 2025
Since 2022, the UK government has bought more than $350 million-worth of the company’s AR3 surveillance drones to send to Ukraine.
—Vasco Cotovio, CNN Money, 21 Sep. 2025
An increase in the use of colonoscopies as a surveillance tool has reduced the incidence of colorectal cancer.
—New Atlas, 21 Sep. 2025
To wander without intent, without surveillance, without the anticipation of acquisition and without expectation that the walk might benefit anything other than our freedom of spirit.
—Paul Greenberg, Time, 20 Sep. 2025
See All Example Sentences for surveillance
Cite this Entry
“Surveillance.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/surveillance. Accessed 22 Sep. 2025.
Copy CitationKids Definition
surveillance
noun
sur·veil·lance
sər-ˈvā-lən(t)s
also -ˈvāl-yən(t)s,
or -ˈvā-ən(t)s
: close watch
under surveillance
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