Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

English definition of “the ozone layer”

the ozone layer

noun [S]    
a layer of air containing ozone high above the Earth that prevents harmful ultraviolet light from the sun from reaching the EarthEnvironmental issuesRubbish and wasteProtection and protectors
(Definition of the ozone layer noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of the ozone layer

Definitions of “the ozone layer” in other dictionaries

Word of the Day

crew

If you crew a boat, or crew for someone on their boat, you help to sail it.

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