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ozone layer

/ˌoʊˈzoʊn ˌleɪər/
/ˈʌʊzəʊn ˈleɪə/
IPA guide

The ozone layer is a region of our atmosphere that absorbs most of the sun's harmful radiation. Without the ozone layer, Earth wouldn't be able to support living organisms.

The ozone layer is located in the stratosphere, about 15 miles from the earth's surface. Ozone gas in the layer is a buffer between us and the powerful ultraviolet radiation produced by the sun. Over time, chemicals used by people have caused the ozone layer to become dangerously thin in spots, allowing more UV rays to penetrate. Thanks to global climate action, the ozone layer has begun to repair itself, and will likely recover to 1980s levels by the 2040s.

Definitions of ozone layer
  1. noun
    a layer in the stratosphere (at approximately 20 miles) that contains a concentration of ozone sufficient to block most ultraviolet radiation from the sun
    synonyms: ozonosphere
    see moresee less
    type of:
    layer
    a relatively thin sheetlike expanse or region lying over or under another
Pronunciation
US
/ˌoʊˈzoʊn ˌleɪər/
UK
/ˈʌʊzəʊn ˈleɪə/
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