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DEFCON Syllabification: DEF·CON
Pronunciation: /ˈdefˌkän/

Entry from US English dictionary

(also defcon)

Definition of DEFCON in English:


Each of a series of five progressive levels of alert used by the US armed forces: conventional and nuclear forces were moved to DEFCON 2 figurative my stress levels have finally reached defcon 1
More example sentences
  • And whenever he pops up on oversea interviewers' radar, the hypocrisy meter was always touching the defcon 5.
  • Tolerance level for people in general is at DEFCON 1.
  • I'm at DEFCON - 3 with the washing machine actually.


1950s: acronym from defense readiness condition.

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