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

Derived forms: acid precipitations

Type of: air pollution

Encyclopedia: Acid precipitation

• hunter-gatherer
• hunting
• hunting and gathering society
• hunting and gathering tribe
• hunting crop
• hunting dog
• hunting expedition
• hunting ground
• hunting guide
• hunting knife
• hunting licence
• hunting license
• hunting lodge
• hunting permit
• hunting season
• hunting spider
• hunting watch
• Huntingdon elm
• Huntingdon willow
• Huntington
• Huntington's chorea
• Huntington's disease
• huntress
• huntsman
• huntsman's cup