security
Concise Oxford English Dictionary © 2008 Oxford University Press:
security/sɪˈkjʊərəti/
▶noun (pl. securities)
- 1 the state of being or feeling secure.
- 2 the safety of a state or organization against criminal activity such as terrorism.
■ measures taken to ensure such safety.
- 3 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.
- 4 a certificate attesting credit, the ownership of stocks or bonds, or the right to ownership connected with tradable derivatives.
'security' also found in these Oxford entries:
ask
- bail
- belt
- beta
- bill of sale
- book value
- bottomry
- censor
- checkpoint
- clone
- closed
- closed-circuit television
- collateral
- conscious
- coupon
- debenture
- debt security
- delist
- DHSS
- discretionary income
- disposable income
- D notice
- DSS
- easy street
- exercise price
- giro
- guarantee
- guaranty
- hostage
- indemnity
- junk bond
- long
- mature
- maturity
- MI5
- MI6
- mole
- Morrison shelter
- mortgage
- municipal bond
- nook
- NSA
- NSC
- obligate
- official secret
- orderly officer
- par
- pawn
- pawnbroker
- perpetuity

