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acidity

/əˈsɪd.ɪ.ti/ noun B2
  1. The quality or state of being acid. (countable, uncountable)
  2. Sourness; tartness; sharpness to the taste. (countable, uncountable) · the acidity of lemon juice· Empty stomachs lead to acidity and leave a sour taste in the mouth.
  3. Excessive acid quality, as in gastric secretions. (countable, uncountable)
  4. A caustic, sour, biting, or bitter quality. (countable, figuratively, uncountable)

Plural acidities

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Words, meanings, pronunciations and translations from Wiktionary (CC BY-SA 4.0); how common each word is from wordfreq. Made into this dictionary by FluentPlex.