ozone layer
nounUK /ˈəʊzəʊn ˈleɪə/
US /ˈoʊzoʊn ˈleɪər/
A blanket of gas high in the sky that keeps us safe from the sun's strong rays.
The ozone layer protects life on Earth from harmful sunlight.
OTHER MEANINGS
2. The region of the stratosphere containing most of the atmosphere's ozone.
Scientists measure the ozone layer from balloons and satellites.
3. A protective barrier or shield against something harmful.
The new policy acts as an ozone layer for consumer data.
4. The part of the atmosphere that absorbs most ultraviolet light.
Thinning of the ozone layer raises skin cancer risks.