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

 

purity

 noun
noun
BrE BrE//ˈpjʊərəti//
 
; NAmE NAmE//ˈpjʊrəti//
 
[uncountable]
 
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the state or quality of being pure The purity of the water is tested regularly. spiritual purity opposite impurity Word Origin Middle English: from Old French purete, later assimilated to late Latin puritas, from Latin purus ‘pure’.Extra examples Hitler’s belief in the purity of blood of the German people She has a purity of heart that inspires others. a classical purity of form high-purity silver the absolute purity of her love the building’s unadorned purity of style The group launched a campaign promoting chastity and moral purity. The veil was regarded as a symbol of the bride’s purity.
See the Oxford Advanced American Dictionary entry: purity