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ALL meanings of acid rain

ac·id rain
A a
  • uncountable noun acid rain Acid rain is rain polluted by acid that has been released into the atmosphere from factories and other industrial processes. Acid rain is harmful to the environment. 3
  • noun acid rain rain that contains a high concentration of pollutants, chiefly sulphur dioxide and nitrogen oxide, released into the atmosphere by the burning of fossil fuels such as coal or oil 3
  • noun acid rain rain or other precipitation with a high concentration of acids produced by sulfur dioxide, nitrogen dioxide, and other such gases that result from the combustion of fossil fuels: it has a destructive effect on plant and aquatic life, buildings, etc. 3
  • noun acid rain precipitation, as rain, snow, or sleet, containing relatively high concentrations of acid-forming chemicals, as the pollutants from coal smoke, chemical manufacturing, and smelting, that have been released into the atmosphere and combined with water vapor: harmful to the environment. 1
  • noun acid rain pollution falling from sky 1
  • noun acid rain Rain which is unusually acidic (pH of less than the natural range of 5 to 6); caused mainly by atmospheric pollution with sulphur dioxide and nitrogen compounds. 0
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