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Learn to pronounce sur·veil·lance

/sərˈvāləns/
noun
close observation, especially of a suspected spy or criminal.
"he found himself put under surveillance by military intelligence"
synonyms: observation, scrutiny, watch, view, inspection, monitoring, supervision, superintendence, spying, espionage, intelligence, undercover work, infiltration, reconnaissance, bugging, wiretapping, phone tapping, recon

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The meaning of SURVEILLANCE is close watch kept over someone or something (as by a detective); also : supervision. How to use surveillance in a sentence.
attentive observation, as to oversee and direct someone or something: increased surveillance of patients with chronic liver disease.
Surveillance is the monitoring of behavior, many activities, or information for the purpose of information gathering, influencing, managing or directing.
the act of watching a person or a place, esp. a person believed to be involved with criminal activity or a place where criminals gather:.
In medicine, the ongoing evaluation of an individual who has an increased risk of developing a disease or who has a disease that appears to be clinically ...
Surveillance is the careful watching of someone, especially by an organization such as the police or the army. He was arrested after being kept under constant ...
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Many times, a person suspected of something illegal by the authorities is placed under surveillance, meaning he or she is closely watched to see if their ...
Surveillance is the act of observing another in order to gather evidence. Surveillance is one of the most common methods law enforcement officials use to ...
the activity of watching someone carefully, especially by the police or army, because they are expected to do something wrong:.
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