ozono-, ozon-, ozoni-, ozo-, oz- +
(Greek: to smell; stink; generally used in a bad sense)
It is found in the atmosphere in minute quantities; especially, after a thunderstorm or around electrical equipment, where it is a powerful oxidizing agent, and it is biologically corrosive.
In the upper atmosphere, it absorbs ultraviolet rays and forms a protective layer against excess ultraviolet radiation, thereby preventing such rays from reaching the surface of the earth.
Ozone is used for bleaching, sterilizing water, purification of drinking water, and as an oxidizing agent.
The ozone hole has grown in size and annual length of existence over the past decades.