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[ser-vey-luhns, -veyl-yuhns]
a watch kept over a person, group, etc., especially over a suspect, prisoner, or the like: The suspects were under police surveillance.
continuous observation of a place, person, group, or ongoing activity in order to gather information: video cameras used for covert surveillance.
attentive observation, as to oversee and direct someone or something: increased surveillance of patients with chronic liver disease.
Source: Dictionary.com
surveillance | Define surveillance at Dictionary.com
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Surveillance - Wikipedia


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