Definition of "acidification" []

• The act or process of making something sour (acidifying), or changing into an acid. (noun)

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• "Predicting the long-term acidification trends in small subarctic lakes using diatoms."
• "Over-fishing, now, and the long-term acidification of the oceans due to carbon dioxide, are far more serious problems ... or I should say, are serious problems, because whaling isn't one."
• "Ocean acidification is happening about ten times faster today than it did 55 million years ago, when it preceded the mass extinction of much of the planet’s marine life."