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UKAcid rain
/ˈasɪd ɹˈeɪn/
/ˈæsɪd ɹˈeɪn/Acid rain
[NOUN]1
rain containing a great deal of acidic chemicals, caused by air pollution, which can harm the environment
synonyms : acid precipitation
Examples
1. So, coal burning can contribute to acid rain.
2. This is acid rain.
3. By the 1970s, scientists in North America and Europe classified acid rain as a major environmental threat.
4. And in fact ammonia causes acid rain.
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