acid rain


Definition of acid rain 

: rain that has increased acidity caused by environmental factors (such as atmospheric pollutants)

Examples of acid rain in a Sentence

trees damaged by acid rain

Recent Examples on the Web

But acid rain can contaminate household water supplies by leaching metals from building and plumbing materials, the USGS says. Jason Hanna, CNN, "Volcanic ashes. Acid rain. And now massive boulders? All the calamities Hawaii is facing," 10 May 2018 The gray trunks of red spruce trees killed by acid rain once heavily scarred the mountain forests of the Northeast. Lisa Rathke, The Christian Science Monitor, "Pollution regulations decrease acid rain, spur red spruce rebound," 11 July 2018 What is needed is a cheap and reliable way of finding out whether a particular set of plants have actually been stressed by a fall of acid rain. The Economist, "A cheap way to save rice plants from the effects of acid rain," 12 July 2018 The area was also at risk for acid rain, which could lead to lead poisoning as rain falls on debris, Dr. Mazariegos said. Elisabeth Malkin, New York Times, "Guatemala Volcano’s Death Toll, Now at 65, Is Likely to Rise," 4 June 2018 Red spruce are particularly sensitive to acid rain and, at the height of the die-off, some forests lost 50 percent of them. Lisa Rathke, The Christian Science Monitor, "Pollution regulations decrease acid rain, spur red spruce rebound," 11 July 2018 Water pollution comes from a range of sources unrelated to real-estate development, including agricultural runoff and acid rain. Lara Korte, WSJ, "Developers Go With the Flow as New Water Rules Kick In," 10 July 2018 Heavy rains are adding to the danger, mixing with the ash to create potential mudslides, flooding and acid rain. Christopher Dawson, CNN, "How to help Guatemala recover from the Fuego volcano," 7 June 2018 In the short term, at least, acid rain isn't expected to be much more likely or copious because of the sulfur dioxide levels. James Burch, National Geographic, "Kilauea Photographers Aid Relief Effort in Hawaii Community," 12 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'acid rain.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of acid rain

1845, in the meaning defined above

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Statistics for acid rain

Last Updated

25 Oct 2018

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Time Traveler for acid rain

The first known use of acid rain was in 1845

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More Definitions for acid rain

acid rain


English Language Learners Definition of acid rain

: rain that contains dangerous chemicals because of smoke from cars and factories

acid rain


Medical Definition of acid rain 

: acid precipitation especially in the form of rain

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Spanish Central: Translation of acid rain Encyclopedia article about acid rain

Comments on acid rain

What made you want to look up acid rain? Please tell us where you read or heard it (including the quote, if possible).


noxious or harmful

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