impurity
noun
im·pu·ri·ty
(ˌ)im-ˈpyu̇r-ə-tē 
plural impurities
1
: something that is impure or makes something else impure
removing impurities from water
2
: the quality or state of being impure
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
Hilal’s research group, for example, is developing electrically conductive reverse osmosis membranes that keep themselves clean by repelling salt ions and impurities.
—
Vanessa Bates Ramirez, Scientific American, 11 Aug. 2025
To make coke, coal is baked in special ovens for hours at high temperatures to remove impurities that could otherwise weaken steel.
—Marc Levy, Chicago Tribune, 11 Aug. 2025
The plant converts coal into coke, a key ingredient in steelmaking, by baking it in high-temperature ovens to remove impurities.
—Jenna Sundel
gabe Whisnant, MSNBC Newsweek, 11 Aug. 2025
The carbon will be removed from the water along with any impurities.
—Karl Schneider, IndyStar, 4 Aug. 2025
See All Example Sentences for impurity
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Vanessa Bates Ramirez, Scientific American, 11 Aug. 2025
To make coke, coal is baked in special ovens for hours at high temperatures to remove impurities that could otherwise weaken steel.
—Marc Levy, Chicago Tribune, 11 Aug. 2025
The plant converts coal into coke, a key ingredient in steelmaking, by baking it in high-temperature ovens to remove impurities.
—Jenna Sundel
gabe Whisnant, MSNBC Newsweek, 11 Aug. 2025
The carbon will be removed from the water along with any impurities.
—Karl Schneider, IndyStar, 4 Aug. 2025
See All Example Sentences for impurity
Cite this Entry
“Impurity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/impurity. Accessed 22 Aug. 2025.
Copy CitationKids Definition
impurity
noun
im·pu·ri·ty
(ˈ)im-ˈpyu̇r-ət-ē
plural impurities
1
: the quality or state of being impure
2
: something that is impure or that makes impure
remove impurities from water
Medical Definition
impurity
noun
im·pu·ri·ty
(ˈ)im-ˈpyu̇r-ət-ē
plural impurities
: something that is impure or makes something else impure
Love words? Need even more definitions?
Merriam-Webster unabridged
Share