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electronic surveillance

noun
  1. surveillance or the gathering of information by surreptitious use of electronic devices, as in crime detection or espionage.
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Origin of electronic surveillance

First recorded in 1970–75
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for electronic surveillance

electronic surveillance

noun
  1. the use of such electronic devices as television monitors, video cameras, etc, to prevent burglary, shop lifting, break-ins, etc
  2. monitoring events, conversations, etc, at a distance by electronic means, esp by such covert means as wiretapping or bugging
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012