Pronunciation change

Noun change

Singular
acidity

Plural
acidities

  1. The quality or state of being acid.
  2. The quality of sour; sourness to the taste, as in the acidity of lemon juice.
    Empty stomachs lead to acidity and leave a sour taste in the mouth.
  3. (pathology) Excessive acid quality, as in gastric secretions.

Related word change