An area to which access is restricted because it is contaminated with radiation or a chemical or biological biohazard. / An area where fighting or hostilities are likely to erupt.

Third-person singular simple present indicative form of red-zone

simple past tense and past participle of red-zone

(Christchurch, New Zealand) To categorize as too damaged to repair, and requiring the owners to vacate (a property).

plural of purple zone

Synonym of war zone

(aviation) Synonym of boom path

plural of bang zone

Alternative form of death zone

(geology, seismology) An area of the Earth's surface where seismographs cannot detect direct P-waves or S-waves from an earthquake.