ozone layer
Definition of ozone layer
: an atmospheric layer at heights of about 20 to 30 miles (32 to 48 kilometers) that is normally characterized by high ozone content which blocks most solar ultraviolet radiation from entry into the lower atmosphere
From the M-W Editors
First Known Use of ozone layer
1927
OZONE LAYER Defined for English Language Learners
ozone layer
Definition of ozone layer for English Language Learners
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: a layer of ozone in the upper atmosphere that prevents dangerous radiation from the Sun from reaching the surface of the Earth
OZONE LAYER Defined for Kids
ozone layer
Definition of ozone layer for Students
: a layer of the earth's upper atmosphere that is characterized by high ozone content which blocks most of the sun's ultraviolet radiation from entering the lower atmosphere
Learn More about ozone layer
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Britannica.com: Encyclopedia article about ozone layer
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