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purity

[pyoo r-i-tee] /ˈpyʊər ɪ ti/
noun
1.
the condition or quality of being pure; freedom from anything that debases, contaminates, pollutes, etc.:
the purity of drinking water.
2.
freedom from any admixture or modifying addition.
3.
ceremonial or ritual cleanness.
4.
freedom from guilt or evil; innocence.
5.
physical chastity; virginity.
6.
freedom from foreign or inappropriate elements; careful correctness:
purity of expression.
7.
Optics. the chroma, saturation, or degree of freedom from white of a given color.
8.
cleanness or spotlessness, as of garments.
Origin
1175-1225
1175-1225; < Late Latin pūritās (see pure, -ity); replacing Middle English pur(e)te < Anglo-French < Late Latin, as above
Related forms
hyperpurity, noun
superpurity, noun
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for hyper-purity

purity

/ˈpjʊərɪtɪ/
noun
1.
the state or quality of being pure
2.
(physics) a measure of the amount of a single-frequency colour in a mixture of spectral and achromatic colours
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for hyper-purity

purity

n.

c.1200, 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.)).

Online Etymology Dictionary, © 2010 Douglas Harper
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