Acidity
Pronunciation : A*cid"i*ty
Part of Speech : n.
Etymology : [L. acidites, fr. acidus: cf. F. acidit?. See Acid.]
Definition : Defn: The quality of being sour; sourness; tartness; sharpness to the taste; as, the acidity of lemon juice.
Source : Webster's Unabridged Dictionary, 1913