ozone layer

[oh-zohn ley-er] / ˈoʊ zoʊn ˈleɪ ər /

NOUN

upper layer of atmosphere

Synonyms

WEAK

isothermal layer ozone ozonosphere

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

HFCs were introduced in the 1990s to replace chemicals that had been found to erode the ozone layer, but turned out to be catastrophic for global warming.

From Barron's • May 21, 2026

"We've kind of deduced it to be UVC radiation, the radiation that exists above the ozone layer because obviously there's no filter up there", he says.

From BBC • Apr. 29, 2026

"Our largest concern is aluminium and aluminium oxides interacting with the ozone layer," Wing says.

From BBC • Feb. 19, 2026

Keeping an eye on the ozone layer takes a team of observing systems spread across the globe.

From Science Daily • Dec. 4, 2025

Zeus’s gaze was as far away as the ozone layer.

From "Blood of Olympus" by Rick Riordan