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English definition of “pollution”

pollution

noun [U]     /pəˈluːʃən/ ENVIRONMENT
damage caused to water, air, etc. by harmful substances or waste: air/water pollution It is the biggest environmental pollution incident in the history of the country.
the harmful substances that cause damage to water, the air, etc.: New research found that industrial pollution goes high in the atmosphere and travels far.
(Definition of pollution noun from the Cambridge Business English Dictionary © Cambridge University Press)
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