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noun se·cu·ri·ty \si-ˈkyu̇r-ə-tē\

Simple Definition of security

  • : 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

Full Definition of security

plural se·cu·ri·ties

  1. 1 :  the quality or state of being secure: asa :  freedom from danger :  safetyb :  freedom from fear or anxietyc :  freedom from the prospect of being laid off <job security>

  2. 2a :  something given, deposited, or pledged to make certain the fulfillment of an obligationb :  surety

  3. 3 :  an instrument of investment in the form of a document (as a stock certificate or bond) providing evidence of its ownership

  4. 4a :  something that secures :  protectionb (1) :  measures taken to guard against espionage or sabotage, crime, attack, or escape (2) :  an organization or department whose task is security

Examples of security

  1. We must insure our national security.

  2. The college failed to provide adequate security on campus after dark.

  3. There was a lapse in security and the inmates escaped.

  4. We have to go through security at the airport.

  5. We called security when we found the door open.

  6. The meeting was held under tight security.

  7. The prisoner was being kept under maximum security.

  8. I like the security of knowing there will be someone there to help me when I need help.

  9. Growing up in a close family gave her a sense of security.

15th Century

First Known Use of security

15th century

Rhymes with security

Medical Dictionary


noun se·cu·ri·ty \si-ˈkyu̇r-ət-ē\

Medical Definition of security

plural se·cu·ri·ties

  1. :  freedom from fear or anxiety <need for security dates back into infancy—K. C. Garrison>

Seen and Heard

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February 11, 2016

the holder of an office

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