Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “pollution”


noun [U]     /pəˈluː.ʃən/
B1 damage caused to water , air , etc. by harmful substances or waste : air / water pollution The manifesto includes tough measures to tackle road congestion and environmental pollution.Environmental issuesRubbish and wasteProtection and protectorsDirt and untidiness
(Definition of pollution noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of pollution

More definitions for “pollution”

Definitions of “pollution” in other dictionaries

Word of the Day

prenuptial agreement

an official document signed by two people before they get married that says what will happen to their possessions and/or children if they divorce (= officially stop being married)

Word of the Day


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