im·​pu·​ri·​ty | \ (ˌ)im-ˈpyu̇r-ə-tē How to pronounce impurity (audio) \
plural impurities

Definition of impurity

1 : something that is impure or makes something else impure removing impurities from water
2 : the quality or state of being impure

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Examples of impurity in a Sentence

the impurity of the water The syrup is strained to remove impurities. The water is free of impurities.
Recent Examples on the Web Also amongst this list of nourishing oils is nigella oil, which is known for soothing any kind of skin irritation or impurity, including chronic dryness. The Salt Lake Tribune, 9 May 2022 It’s in that proprietary reactor where the CO2 and H2 meet and are converted into impurity-free alcohols for use as a base ingredient in consumer goods. Simon Mainwaring, Forbes, 3 May 2022 And this time the carcinogenic culprit of concern is a nitrosamine impurity called N-nitroso-quinapril. Bruce Y. Lee, Forbes, 26 Mar. 2022 From the mid-1960s to the mid-1970s, China entered a dark period where hundreds of thousands were bullied and killed in order to weed out capitalists, feudalists and others guilty of ideological impurity. Jane Li, Quartz, 17 Nov. 2021 Its debut product, Air Vodka with Natural Flavors, is not only a sugar-free, carbohydrate-free, gluten-free, impurity-free, high-quality and sustainable spirit. Quora, Forbes, 12 Nov. 2021 Smoking cessation drug Chantix was recalled for higher than acceptable levels of a potential carcinogen called nitrosamine, a chemical impurity tied to recalls of other drugs as well. Miriam Fauzia, USA TODAY, 27 Oct. 2021 Ozone gets rid of the naturally occurring impurity of hydrogen sulfide, which adds color and the smell of rotten eggs to water. Kevin Spear,, 12 Oct. 2021 This eternal negotiation can be seen in Inseparable, as well as de Beauvoir’s other fiction—particularly in her female protagonists, who accept the impurity of human life in their quest for a desire always just out of reach. Apoorva Tadepalli, The Atlantic, 28 Sep. 2021 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'impurity.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of impurity

15th century, in the meaning defined at sense 1

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Time Traveler for impurity

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The first known use of impurity was in the 15th century

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Last Updated

20 May 2022

Cite this Entry

“Impurity.” Dictionary, Merriam-Webster, Accessed 24 May. 2022.

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More Definitions for impurity


im·​pu·​ri·​ty | \ im-ˈpyu̇r-ə-tē How to pronounce impurity (audio) \
plural impurities

Kids Definition of impurity

1 : the quality or state of being impure
2 : something that is or makes something else impure Impurities in the gold were detected.


im·​pu·​ri·​ty | \ (ˈ)im-ˈpyu̇r-ət-ē How to pronounce impurity (audio) \
plural impurities

Medical Definition of impurity

: something that is impure or makes something else impure

More from Merriam-Webster on impurity

Nglish: Translation of impurity for Spanish Speakers

Britannica English: Translation of impurity for Arabic Speakers


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