Definition of acidity noun from the Oxford Advanced Learner's Dictionary

 

acidity

 noun
noun
BrE BrE//əˈsɪdəti//
 
; NAmE NAmE//əˈsɪdəti//
 
[uncountable]
 
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the state of having a sour taste or of containing acid to test the acidity of soil
See the Oxford Advanced American Dictionary entry: acidity