plural of nuclear-free zone

plural of Wadati-Benioff zone

(politics, US) An area set aside in public places for the purpose of protesting.

plural of free speech zone

(US) An area where car parking is not allowed, and where illegally parked cars will be removed by tow truck.

plural of tow-away zone

(anatomy) The part of the retina, lacking blood vessels, that is the centre of the macula

plural of foveal avascular zone

(aviation) The top of the Earth's atmosphere, from 50,000 ft (the start of the stratosphere) and up (to the edge of the exosphere at 1000 mi); where the effects of exposure to the environment on human life is similar to that of exposure to space; it being physiologically incompatible with human life.

(physiology, neuroscience) An area of the medulla oblongata, located in the area postrema, that receives inputs from blood-borne drugs or hormones, and communicates with other structures in the vomiting center to initiate vomiting.