Dictionary
security
noun se·cu·ri·ty \si-ˈkyu̇r-ə-tē\
: the state of being protected or safe from harm
: things done to make people or places safe
: the area in a place (such as an airport) where people are checked to make sure they are not carrying weapons or other illegal materials
plural se·cu·ri·ties
Full Definition of SECURITY
1
2
a : something given, deposited, or pledged to make certain the fulfillment of an obligation b : surety
3
: an instrument of investment in the form of a document (as a stock certificate or bond) providing evidence of its ownership
4
a : something that secures : protection b (1) : measures taken to guard against espionage or sabotage, crime, attack, or escape (2) : an organization or department whose task is security
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First Known Use of SECURITY
15th century
Related to SECURITY
SECURITY Defined for Kids
security
noun se·cu·ri·ty \si-ˈkyu̇r-ə-tē\
plural se·cu·ri·ties
Definition of SECURITY for Kids
1
: the state of being safe : safety <national security>
2
: freedom from worry or anxiety <financial security>
3
: something given as a pledge of payment <He gave security for a loan.>
4
: something (as a stock certificate) that is evidence of debt or ownership
Medical Dictionary
security
noun se·cu·ri·ty \si-ˈkyu̇r-ət-ē\
plural se·cu·ri·ties
Medical Definition of SECURITY
: freedom from fear or anxiety <need for security dates back into infancy—K. C. Garrison>
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