securityse·cu·ri·ty /sɪˈkjʊərəti-ˈkjʊr-/ noun (plural securities)1[uncountableU] actions to keep someone or something safe from being damaged, stolen etcWe spend roughly as much on security as on sales promotion.
On April 29th, a security alert shut down the London Stock Exchange.
teams of professional security guards
2[uncountableU] a feeling of being safe and free from worry about what might happenJob security (=being confident that you are unlikely to lose your job) is the main issue in the dispute.
Many Koreans like thefinancial security of working for big companies.
3[uncountableU]FINANCE property or other assets that you promise to give someone if you cannot pay back the money that you owe themThe bank offers its customers flexible borrowing, usually without security.
His parents have pledged (=promised) their homes as security so that he can obtain finance for his new business.
4[countableC]FINANCE a financial investment such as a bond or share etc, or the related CERTIFICATE showing who owns itNumbers showed that investment in foreign securities slowed in November.
Securities firms outside the EU often operate under different rules.
Almost every country with a developedsecurities market has some form of controls outlawing insider dealing.
→ asset-backed security → bearer security → continuing security → convertible security → dated security → deferred security → fixed-interest security → gilt-edged security → government security → listed security → long-term security → marketable security → medium-term security → mortgage-backed security → negotiable security → registered security → short-term security → undated security → unlisted security → see also social security