Noun acidity has 3 senses
  1. sourness, sour, acidity - the property of being acidic
    --1 is a kind of taste property
    --1 has particulars: acerbity, tartness; vinegariness, vinegarishness
  2. acidity, acidulousness - the taste experience when something acidic is taken into the mouth
    --2 is a kind of sour, sourness, tartness
  3. acidity - pH values below 7
    --3 is a kind of
    pH, pH scale
    Antonyms: alkalinity
    --3 has particulars: hyperacidity
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