acid precipitation


noun
  1. meteorological precipitation that is relatively acidic.

Origin of acid precipitation

1
First recorded in 1975–80

Words Nearby acid precipitation

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Scientific definitions for acid precipitation

acid precipitation

  1. Any form of precipitation, including rain, snow, hail, fog, or dew, that is high in acid pollutants, especially sulfuric and nitric acid. Acid precipitation has a pH of less than 5.6 (the normal acidity of unpolluted atmospheric water) and is often less than pH 5.0. Also called acid rain See Note at acid deposition.

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