Definition of "surveillance" []

• Close observation of a person or group, especially one under suspicion. (noun)
• The act of observing or the condition of being observed. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "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 ­ ..."
• "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"
• "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."