acid rain

You are here

  • noun
    Rainfall made so acidic by atmospheric pollution that it causes environmental harm, chiefly to forests and lakes. The main cause is the industrial burning of coal and other fossil fuels, the waste gases from which contain sulphur and nitrogen oxides which combine with atmospheric water to form acids. (Power generated from fossil fuels causes smog, mercury pollution, acid rain and global warming.)


We are dedicated to creating and providing free, high-quality English language learning resources.