acidification

uh-SID-if-ik-AY-shun /əˌsɪdɪfɪˈkeɪʃən/
nounC1TOEFLIELTS
scientificenvironmental

The process of becoming more acidic.

In marine ecology, it specifically refers to the reduction in the pH of the ocean over an extended period, caused primarily by uptake of CO2.

The story behind the word. Combines 'acid' (from Latin 'acidus', meaning sour) with the suffix '-fication' (from 'facere', to make). It describes the literal 'making' of the ocean into an acidic environment.

Word relationships

  • alkalinization: The process of becoming more alkaline (basic).

Commonly confused with

  • pollution: Pollution is a broad term; acidification is a specific chemical process.

Word family

  • acid (noun): A chemical substance that neutralizes alkalis.
  • acidic (adjective): Having the properties of an acid.

Collocations

  • ocean acidification
  • rate of acidification
  • acidification levels

Example sentences

  • "Ocean acidification is often called the 'evil twin' of climate change." Environmental warning.
  • "The acidification of the water makes it harder for shellfish to build their shells." Biology research.

Memory hook

Acid-ification: The process of making something Acid. Acidification = Becoming acidic.

When not to use

Do not use to describe a sudden spill of acid; it refers to a gradual, systemic change.

Fun facts

  • Since the beginning of the Industrial Revolution, the pH of surface ocean waters has fallen by 0.1 pH units, a 30% increase in acidity.

Related words

salinity, eutrophication

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