acid rain

ac·id rain
A a


    • US Pronunciation
    • US IPA
    • UK Pronunciation
    • UK IPA
    • [as-id reyn]
    • /ˈæs ɪd reɪn/
    • /ˈæsɪd reɪn/
    • US Pronunciation
    • US IPA
    • [as-id reyn]
    • /ˈæs ɪd reɪn/

Definitions of acid rain words

  • uncountable noun acid rain Acid rain is rain polluted by acid that has been released into the atmosphere from factories and other industrial processes. Acid rain is harmful to the environment. 3
  • noun acid rain 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 3
  • noun acid rain rain or other precipitation with a high concentration of acids produced by sulfur dioxide, nitrogen dioxide, and other such gases that result from the combustion of fossil fuels: it has a destructive effect on plant and aquatic life, buildings, etc. 3
  • noun acid rain 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. 1
  • noun acid rain pollution falling from sky 1
  • noun acid rain Rain which is unusually acidic (pH of less than the natural range of 5 to 6); caused mainly by atmospheric pollution with sulphur dioxide and nitrogen compounds. 0

Information block about the term

Origin of acid rain

First appearance:

before 1855
One of the 30% newest English words
First recorded in 1855-60

Historical Comparancy

Parts of speech for Acid rain


acid rain popularity

A pretty common term. Usually people know it’s meaning, but prefer to use a more spread out synonym. About 47% of English native speakers know the meaning and use word.
This word is included in each student's vocabulary. Most likely there is at least one movie with this word in the title.

acid rain usage trend in Literature

This diagram is provided by Google Ngram Viewer

Synonyms for acid rain

noun acid rain

  • fog — a second growth of grass, as after mowing.
  • smoke — the visible vapor and gases given off by a burning or smoldering substance, especially the gray, brown, or blackish mixture of gases and suspended carbon particles resulting from the combustion of wood, peat, coal, or other organic matter.
  • soot — a black, carbonaceous substance produced during incomplete combustion of coal, wood, oil, etc., rising in fine particles and adhering to the sides of the chimney or pipe conveying the smoke: also conveyed in the atmosphere to other locations.
  • haze — an aggregation in the atmosphere of very fine, widely dispersed, solid or liquid particles, or both, giving the air an opalescent appearance that subdues colors.
  • carbon dioxide — Carbon dioxide is a gas. It is produced by animals and people breathing out, and by chemical reactions.

See also

Matching words

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