also demilitarise; "remove military organization from," 1869, see de- + militarize. Demilitarized zone attested by 1921 (the Versailles Treaty uses neutralized zone). Abbreviation DMZ, for the one between North Korea and South Korea, is attested by 1960. Related: Demilitarization.
demesne
Demeter
demi-
demigod
demijohn
demilitarize
demi-monde
demise
demisemiquaver
demiss
demission