[sɪˈkjɔːrɪti], (Noun)

Definitions:
- the state of being free from danger or threat
(e.g: the system is designed to provide maximum security against toxic spills)

- a thing deposited or pledged as a guarantee of the fulfilment of an undertaking or the repayment of a loan, to be forfeited in case of default

- a certificate attesting credit, the ownership of stocks or bonds, or the right to ownership connected with tradable derivatives


Phrases:
- on security of something

Origin:
late Middle English: from Old French securite or Latin securitas, from securus ‘free from care’ (see secure)