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Noun: acidity  u'si-di-tee
  1. The property of being acidic
    - sourness, sour
  2. The taste experience when something acidic is taken into the mouth
    - acidulousness
  3. PH values below 7

Derived forms: acidities

Type of: pH, pH scale, sour, sourness, tartness, taste property

Antonym: alkalinity

Encyclopedia: Acidity