noun DEF·CON \ˈdef-ˌkän\

Definition of DEFCON

:  any of five levels of United States military defense readiness ranked according to the perceived threat to national security

Origin of DEFCON

defense condition
First Known Use: 1962


Next Word in the Dictionary: defeasancePrevious Word in the Dictionary: defaunateAll Words Near: DEFCON
July 01, 2015
precarious Hear it
not certain, secure, or steady
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears