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  1. Surveillance Definition & Meaning - Merriam-Webster

  2. Surveillance - Wikipedia

  3. SURVEILLANCE | English meaning - Cambridge Dictionary

  4. SURVEILLANCE definition | Cambridge English Dictionary

  5. SURVEILLANCE definition and meaning | Collins English Dictionary

  6. surveillance noun - Definition, pictures, pronunciation and usage …

  7. Surveillance - definition of surveillance by The Free Dictionary

  8. Surveillance Definition & Meaning | Britannica Dictionary

  9. Surveillance - Definition, Meaning & Synonyms - Vocabulary.com

  10. SURVEILLANCE definition | Cambridge Learner’s Dictionary