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Noun: acid rain
  1. Rain containing acids that form in the atmosphere when industrial gas emissions (especially sulphur dioxide and nitrogen oxides) combine with water
    - acid precipitation

Derived forms: acid rains

Type of: air pollution

Encyclopedia: Acid rain

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acicula
acicular
aciculate
acid
acid anhydrides
acid dye
acid halide
acid head
acid hydrogen
acid precipitation
acid rain
acid rock
acid test
acid value
acid-base balance
acid-base equilibrium
acid-base indicator
acidemia
acid-fast
acid-forming
acidic