surveillance

IPA: sɝvˈeɪɫʌns

Close observation of an individual or group; person or persons under suspicion.
Continuous monitoring of disease occurrence for example.
(military, espionage) Systematic observation of places and people by visual, aural, electronic, photographic or other means.
(law) In criminal law, an investigation process by which police gather evidence about crimes, or suspected crime, through continued observation of persons or places.

Examples of "surveillance" in Sentences

Charles writes: The word "surveillance" is in NEITHER Article I nor II --
After moving, her family were periodically placed under what she described as surveillance.
Defenders of online tracking argue that this kind of surveillance is benign because it is conducted anonymously.
We feel that careful monitoring, what we call surveillance, looking for new diseases as they crop up anywhere in the world affects us anywhere else in the world.
Balkin rejects the term surveillance, and breaks the term down into the collection of information (which is possible via many different means), the collation of information
The word "surveillance" is in NEITHER Article I nor II -- consider it in the penumbra of "Commander in Chief" if that helps -- unless you are going to claim that no one in the U.S. government can legally spy on the enemy during wartime?!
Google acted over dissident fears - Google realised dissidents were at risk from attempts to use company's technology for surveillance, say sources Google moved quickly to announce that it would stop censoring its Chinese service after realising dissidents were at risk from attempts to use the company's technology for political surveillance, according to a source with direct ...