Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

English definition of “security”

security

noun [U] (FREE FROM DANGER)   /sɪˈkjʊər·ɪ·t̬i/ social studies
freedom from danger ; safety : For security reasons , for the protection of the White House and the president , they felt it necessary to close the avenue . A convicted spy , he sold information that may have damaged our national security. Security is also the group of people responsible for keeping buildings or other areas safe : If anyone gives you trouble , just call security.
(Definition of security noun (FREE FROM DANGER) from the Cambridge Academic Content Dictionary © Cambridge University Press)
Focus on the pronunciation of security

Browse related topics

You are looking at an entry to do with Safe and secure, but you might be interested in these topics from the Protecting and saving topic area:

Definitions of “security” in other dictionaries

Word of the Day

amicable

relating to behaviour between people that is pleasant and friendly, often despite a difficult situation

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More