surveillance

noun surveillances

1. countable, uncountable Close observation of an individual or group; person or persons under suspicion. The surveillance program includes at least 480 LPRs that scan and record about 16.2 million vehicles per week and stores that data for two years, he wrote in the court filing.
2. countable, uncountable Continuous monitoring of disease occurrence for example. Lady Anne appeared in a week or two to have greatly recovered her appetite, and she talked much of the benefit derived from her native air, in order to gain which, she constantly drove out in Lord Rotheles's carriages, and appeared to derive comfort from her admiration of his beautiful bays; beyond
3. countable, uncountable Systematic observation of places and people by visual, aural, electronic, photographic or other means. The threat of terrorism to the British lies in the overreaction to it of British governments. Each one in turn clicks up the ratchet of surveillance, intrusion and security. Each one diminishes liberty.
4. countable, uncountable In criminal law, an investigation process by which police gather evidence about crimes, or suspected crime, through continued observation of persons or places.