Definition from macmillandictionary.com
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Every precaution has been taken to ensure the personal security of the delegates.
The information received is highly confidential and relates to internal security.
The meeting took place amid extremely tight security.
the Prime Minister’s security advisers
If you won’t leave, I’ll have to call security.
It gave her the security of knowing there was someone she could talk to.
A predictable routine gives children a sense of security.
She was concerned about her financial security.
Additional security for any loan may be required by the bank.