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Noun security measures has 2 senses
- security system, security measures, security - an electrical device that sets off an alarm when someone tries to break in
--1 is a kind of electrical device
- security, security measures - measures taken as a precaution against theft or espionage or sabotage etc.; "military security has been stepped up since the recent uprising"
--2 is a kind of precaution, safeguard, guard