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Related to surveillance: surveillance system
1. Close observation of a person or group, especially one under suspicion.
2. The act of observing or the condition of being observed.
(Law) close observation or supervision maintained over a person, group, etc, esp one in custody or under suspicion
[C19: from French, from surveiller to watch over, from sur-1 + veiller to keep watch (from Latin vigilāre; see vigil)]
surˈveillant adj, n
sur•veil•lance(sərˈveɪ ləns, -ˈveɪl yəns)
1. a watch kept over someone or something, esp. over a suspect, prisoner, etc.: under police surveillance.
2. supervision or superintendence.
[1790–1800; < French, =surveill(er) to watch over (sur- sur-1 + veiller < Latin vigilāre to watch]
The systematic observation of aerospace, surface, or subsurface areas, places, persons, or things, by visual, aural, electronic, photographic, or other means. See also air surveillance; satellite and missile surveillance; sea surveillance.
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|Noun||1.||surveillance - close observation of a person or group (usually by the police)|
electronic surveillance - surveillance by electronic means (e.g. television)
stakeout - surveillance of some place or some person by the police (as in anticipation of a crime)
surveillance of disease - the ongoing systematic collection and analysis of data about an infectious disease that can lead to action being taken to control or prevent the disease