surveillance
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noun Close observation of a person or group, especially one under suspicion.
noun The act of observing or the condition of being observed.
noun Oversight; superintendence; supervision; watch; spying.
noun Oversight; watch; inspection; supervision.
noun Close observation of an individual or group ; person or persons under suspicion .
noun Continuous monitoring of disease occurrence for example.
noun Systematic observation of places and people by visual , aural , electronic , photographic or other means.
noun In criminal law, an investigation process by which police gather evidence about crimes , or suspected crime, through continued observation of persons or places.
noun close observation of a person or group (usually by the police)
