əˈsidəd.ē, aˈ-, -ətē, -i noun
( -es )
Etymology: French or Latin; French acidité, from Latin aciditat-, aciditas, from acidus acid, sour + -itat-, -itas -ity — more at acid
1.
a. : the quality, state, or degree of being sour or chemically acid : sourness , tartness
the acidity of lemon juice
b. : the quality or state of being abnormally or excessively acid : hyperacidity
acidity of the stomach
— not used technically
c. : a tartness or sharpness in the taste of wine due to the presence of fruit acids
2. : the quality, state, or degree of being acid (as in manner)
talking with her usual slightly envious acidity — Mary Deasy