| Noun | 1. | defensive measure - (military) military action or resources protecting a country against potential enemies; "they died in the defense of Stalingrad"; "they were developed for the defense program" umbrella - a formation of military planes maintained over ground operations or targets; "an air umbrella over England" military action, action - a military engagement; "he saw action in Korea" air defense - defensive measures designed to destroy attacking enemy aircraft or missiles or to nullify their effectiveness stand - a defensive effort; "the army made a final stand at the Rhone" hasty defence, hasty defense - a defense organized while in contact with the enemy or when time is limited deliberate defence, deliberate defense - a defense organized before contact is made with the enemy and while time for organization is available; usually includes a fortified zone (with pillboxes) and communication systems biodefence, biodefense, biological defence, biological defense - procedures involved in taking defensive measures against attacks using biological agents chemical defence, chemical defense - procedures involved in taking defensive measures against attacks using chemical agents minelaying, mining - laying explosive mines in concealed places to destroy enemy personnel and equipment biological warfare defence, biological warfare defense, BW defence, BW defense - defense against biological warfare armed forces, armed services, military, military machine, war machine - the military forces of a nation; "their military is the largest in the region"; "the military machine is the same one we faced in 1991 but now it is weaker" |