ozone layer

noun

: 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

Examples of ozone layer in a Sentence

Recent Examples on the Web

This is what happens to your body in extreme heat Long-wave ultraviolet A rays (UVA) and short-wave ultraviolet B rays (UVB) penetrate the ozone layer and can burn, damage and age skin even on cloudy days. —Sandee Lamotte, CNN, 21 June 2024

Although the ozone layer in the upper atmosphere shields us from the sun’s radiation, ground-level ozone poses health risks. —Jade Jackson, The Indianapolis Star, 20 June 2024

Bratton was inspired to write the tune after reading an article in Popular Mechanics about how the hole in the ozone layer is actually shrinking in size. —Andy Greene, Rolling Stone, 14 June 2024

Like the ozone layer, the release of gas started a destructive chain reaction impacting the entire world! —Journal Sentinel, 11 Jan. 2024

Word History

First Known Use

1927, in the meaning defined above

Kids Definition

ozone layer

noun

: a layer of the earth's atmosphere at heights of about 20 to 30 miles (32 to 48 kilometers) that is normally characterized by high ozone content which blocks most of the sun's ultraviolet radiation from entry into the lower atmosphere