Meaning of SECURITY in English

I. sə̇ˈkyu̇rəd.ē, sēˈ-, -rətē, -i noun

( -es )

Usage: often attributive

Etymology: Middle English securite, from Latin securitat-, securitas, from securus free from care, safe, secure + -itat-, -itas -ity

1. : the quality or state of being secure: as

a. : freedom from danger : safety

security from famine

security against aggression

everyone has the right to life, liberty and security of person — U.N. Declaration of Human Rights

seeking after the illusion of certainty … in the form of a quest for absolute security — E.N.Griswold

b. archaic : carefree or cocky overconfidence

security is mortals' chiefest enemy — Shakespeare

c. : freedom from fear, anxiety, or care

this need for security dates back into infancy — K.C.Garrison

security … thought of as a harmony between internal needs and the social availability of the means for their satisfaction — W.C.Olson

my one chance of security lies in fixing attention solely on the first chapter — Arnold Bennett


(1) : freedom from uncertainty or doubt : confidence , assurance

knowing she still had the security of his faithful devotion — Morley Callaghan

distinguished by a certain security of judgment — J.R.Lowell

(2) : sureness of technique

the cellist plays with great security but overlooks opportunities to let the sunlight in — Arthur Berger

e. : basis for confidence : guarantee

our plan gives us no security that we shall get the steam engine — G.B.Shaw

f. : firmness

security of attachment

: dependability , stability

the security of a knot

a moral poise, a security of values that is very rare in our age — Irving Howe & Eliezer Greenberg


a. : something given, deposited, or pledged to make certain the fulfillment of an obligation (as the payment of a debt) : property given or serving to make secure the enjoyment or enforcement of a right : guaranty , pledge

the security is poor

b. : one who becomes surety for another or engages himself for the performance of another's obligation : surety

was willing to go security for his friend

fined and ordered to find securities for good behavior — Edward Jenks

3. : a written obligation, evidence, or document of ownership or creditorship (as a stock, bond, note, debenture, or certificate) giving the holder the right to demand and receive property not in his possession

a government security

negotiable securities

specifically : one issued to investors to finance a business enterprise

4. : something that secures : defense , protection , guard

their one source of security in a glowering alien climate — A.R.Marcus


a. : measures taken (as by a military unit) to ensure against surprise attack

the battalion … set up security — Walter Bernstein

b. : measures taken (as by a national government or a governmental unit) to guard against espionage, observation, sabotage, and surprise

security prevents the reporting of actual production figures — New Republic

c. : protection against economic vicissitudes

government guarantees for old age security — T.W.Arnold

the very heavy emphasis that younger men are now placing on … security — Fortune

d. : penal custody

the new prison system … provides for the care of offenders on the basis of classification as to custody (maximum, medium, and minimum security ) — C.E.Johnson

5. : the resistance of a cryptogram to cryptanalysis measured usually by the time and effort needed to solve it


— an international radiotelephone signal word introducing a safety message

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.