Security is protection from, or resilience against, potential harm (or other unwanted coercion). Beneficiaries (technically referents) of security may be persons and social groups, objects and …

The meaning of SECURITY is the quality or state of being secure. How to use security in a sentence.

SECURITY definition: 1. protection of a person, building, organization, or country against threats such as crime or…. Learn more.

adjective of, relating to, or serving as security. The company has instituted stricter security measures.

If something is security for a loan, you promise to give that thing to the person who lends you money, if you fail to pay the money back.

Something that gives or assures safety, as: a. A group or department of private guards: Call building security if a visitor acts suspicious. b. Measures adopted by a government to prevent …

Definition of security noun from the Oxford Advanced Learner's Dictionary. [uncountable] the activities involved in protecting a country, building or person against attack, danger, etc. They …

May 30, 2025 · Security in IT is the method of preventing, defending and mitigating cyberattacks. Learn the different types of security and the best security principles.

There are 20 meanings listed in OED's entry for the noun security, one of which is labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

2 days ago · The White House quietly released President Donald Trump’s new national security strategy late Thursday, a 33-page document that elevates his “America First” doctrine and sets …