definition of
sourness

[1] #1 sourness n. [sour, tartness] the taste experience when vinegar or lemon juice is taken into the mouth. wn

[2] #2 sourness n. [sour, acidity] the property of being acidic. wn

[3] #3 sourness n. [sulkiness, sullenness, moroseness] a sullen moody resentful disposition. wn