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

The causes of both events had been long debated, however one hypothesis has linked them to depletions in the Earth's protective ozone layer, such as might be caused by a supernova going off in local space. —David Faris, Newsweek, 17 Mar. 2025

The ozone layer over Antarctica, damaged by air pollution decades ago, has fortunately been recovering in recent years. —Jack Knudson, Discover Magazine, 6 Mar. 2025

Earth's ozone layer would be destroyed if there was a supernova right now any closer than 50 light-years from the solar system, allowing the sun's ultraviolet radiation to quickly extinguish all life. —Jamie Carter, Forbes, 27 Feb. 2025

Still, astronomers have been concerned that burning Starlink satellites threatens the ozone layer, pointing to the release of vaporized metals. —Michael Kan, PCMAG, 30 Jan. 2025

Word History

First Known Use

1927, in the meaning defined above

Rhymes for ozone layer

• assayer
• ballplayer
• betrayer
• bilayer
• bricklayer
• conveyer
• conveyor
• purveyor
• ratepayer
• soothsayer
• surveyor
• taxpayer

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