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English definition of “security”


noun (PROTECTION)    /sɪˈkjʊə.rɪ.ti/ US  /-ˈkjʊr.ə.t̬i/
B1 [U] protection of a person , building , organization , or country against threats such as crime or attacks by foreign countries : The station was closed for two hours because of a security alert . 30 demonstrators were killed in clashes with the security forces over the weekend . The tighter security measures / precautions include video cameras in the city centre . The students were deported because they posed a threat to national security. The proposed national identity card system would help to tighten security against fraud . The most dangerous criminals are held in maximum-security prisons (= prisons that are as difficult as possible to escape from).Protection and protectorsEnvironmental issues [U, + sing/pl verb] the group of people responsible for protecting a building : You'll need to notify security if you want to work late in the office .Protection and protectorsEnvironmental issues
(Definition of security noun (PROTECTION) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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