To acidify something is to chemically turn it into an acid or make it more acidic. Farmers often acidify soil by adding fertilizer to it.

When you acidify something, you increase its acid content or make it more sour. Too much carbon dioxide dissolving into oceans acidifies them, one of the many negative effects of global warming. When it comes to food, you're most likely to acidify a dish by adding citrus fruits, like lemons, which taste sour. The root word of the verb acidify is the Latin acidus, which means "sour or sharp."

Definitions of acidify
  1. verb
    turn acidic
    synonyms: acetify
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    alkalify, alkalise, alkalize, basify
    turn basic and less acidic
    type of:
    change state, turn
    undergo a transformation or a change of position or action
  2. verb
    make sour or more sour
    synonyms: acetify, acidulate, sour
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    dulcify, dulcorate, edulcorate, sweeten
    make sweeter in taste
    type of:
    change taste
    alter the flavor of
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