Purity
来自Big Physics
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Middle English: from Old French purete, later assimilated to late Latin puritas, from Latin purus ‘pure’.
wiktionary
pure + -ity, from Old French purete, from Latin puritas.
etymonline
purity (n.)
c. 1200, purite, "freedom from moral contamination, sinlessness, innocence; righteousness; chastity," from Old French purete "simple truth," earlier purte (12c., Modern French pureté), from Late Latin puritatem (nominative puritas) "cleanness, pureness," from Latin purus "clean, pure, unmixed; chaste, undefiled" (see pure (adj.)). From mid-15c. as "freedom from admixture or adulteration."
