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acid rain

Noun CEFR B2

Definitions

Rain which is unusually acidic (pH of less than the natural range of 5 to 6); caused mainly by atmospheric pollution with sulphur dioxide, carbon dioxide and nitrogen compounds.

countable, uncountable

Equivalents

Françaispluie acide
27 more languages

Examples

Acid rain forms when water in the atmosphere condenses on particles containing acid-forming pollutants, such as sulfate produced by the burning of fossil fuels and nitrogen oxides from automobile exhausts.”

CEFR level

B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
See all B2 English words →

See also

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