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acid rain

noun
1.
precipitation, as rain, snow, or sleet, containing relatively high concentrations of acid-forming chemicals, as the pollutants from coal smoke, chemical manufacturing, and smelting, that have been released into the atmosphere and combined with water vapor: harmful to the environment.
Origin
1855-1860
1855-60
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for acid rain
  • That's because raindrops simply take the pollutants with them as they fall from the atmosphere-the mechanism behind acid rain.
  • There were fires worldwide, a tsunami more than half a mile high and storms of acid rain.
  • Opponents say it might produce acid rain and decimate plant and fish life.
  • The gas also causes acid rain and wears away the ozone layer, a key barrier to the sun's rays.
  • It found relatively little for which the blame could conclusively be placed on acid rain.
  • Absorbed into the air, nitrate turns into nitrogen oxide, another ingredient of acid rain.
  • The sulfur dioxide produced by these coal-fired power plants is a pollutant that contributes to the production of acid rain.
  • Plus, nitrogen dioxide is water soluble, and would precipitate down as acid rain.
  • Clean coal technology researched during the seventies and eighties focused on reducing acid rain reduction by removing sulphur.
  • We didn't do it when acid rain was decimating our forests.
British Dictionary definitions for acid rain

acid rain

noun
1.
rain that contains a high concentration of pollutants, chiefly sulphur dioxide and nitrogen oxide, released into the atmosphere by the burning of fossil fuels such as coal or oil
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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acid rain in Culture

acid rain definition


A type of precipitation made up of dilute acids, primarily a by-product of heavy industry.

Note: Acid rain is a result of the combination of water with chemicals released into the atmosphere by the burning of fossil fuels.
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Difficulty index for acid rain

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Word Value for acid

7
8
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