English edit

Alternative forms edit

Etymology edit

anti- +‎ defense

Adjective edit

antidefense (not comparable)

  1. (military) Countering a defense system.
    • 1986 December, Bulletin of the Atomic Scientists, volume 42, number 10, page 52:
      The Soviet Union has already indicated that it may respond to deployment of a ballistic-missile defense system by deploying antidefense weapons, such as space mines to trail defense satellites.