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ozone British & World English

A colourless unstable toxic gas with a pungent odour and powerful oxidizing properties, formed from oxygen by electrical discharges or ultraviolet light. It differs from normal oxygen (O2) in having three atoms in its molecule (O3)

ozone-sonde British & World English

A sonde which transmits information on the ozone content of the atmosphere.

ozone hole British & World English

A region of marked thinning of the ozone layer in high latitudes, chiefly in winter, attributed to the chemical action of CFCs and other atmospheric pollutants. The resulting increase in ultraviolet light at ground level gives rise to an increased risk of skin cancer

ozone layer British & World English

A layer in the earth’s stratosphere at an altitude of about 10 km (6.2 miles) containing a high concentration of ozone, which absorbs most of the ultraviolet radiation reaching the earth from the sun

ozone depleter British & World English

Any of various environmental pollutants which contribute to the depletion of the ozone layer in the earth's atmosphere.

ozone-depleting British & World English

Causing a reduction in the concentration of ozone in the ozone layer

ozone depletion British & World English

Reduction in the concentration of ozone in the ozone layer

ozone-friendly British & World English

(Of manufactured products) not containing chemicals that are destructive to the ozone layer

ozone-destroying British & World English

That causes, or contains chemicals that cause, the destruction of the ozone layer.