Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

English definition of “ozone layer”

ozone layer

noun [S]    
ENVIRONMENT a layer of air high above the Earth that contains ozone (= a form of oxygen ) and that prevents harmful light from the sun from reaching the Earth
(Definition of ozone layer noun from the Cambridge Business English Dictionary © Cambridge University Press)
Focus on the pronunciation of ozone layer

Definitions of “ozone layer” in other dictionaries

Word of the Day

amicable

relating to behaviour between people that is pleasant and friendly, often despite a difficult situation

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More