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.

He draws parallels to chlorofluorocarbons pollutants released from refrigerators that bore a hole in the ozone layer last century, and were eventually banned.

From BBC • Feb. 19, 2026

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

From BBC • Feb. 19, 2026

Weather balloon observations showed that in 2025, the ozone layer directly over the South Pole dropped to a minimum of 147 Dobson Units on October 6.

From Science Daily • Dec. 4, 2025

If Mars once had an ozone layer shielding its surface from ultraviolet radiation, that protective barrier could have made it far more hospitable to life billions of years ago.

From Science Daily • Oct. 19, 2025

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

From "Blood of Olympus" by Rick Riordan