untreated

adjective

un·​treat·​ed ˌən-ˈtrē-təd How to pronounce untreated (audio)
: not treated
untreated wastewater
especially : not improved or controlled medically
an untreated case of pneumonia
untreated diabetic patients

Examples of untreated in a Sentence

untreated wool
Recent Examples on the Web
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.
Yet, even untreated, the water could still have applications in agriculture or mining. Lauren Leffer, Popular Science, 20 Feb. 2025 Hazardous Conditions: Freezing rain is expected to create icy patches, particularly on bridges, overpasses, and untreated roads. Thomas G. Moukawsher, Newsweek, 12 Feb. 2025 Beyond the workplace, untreated mental health challenges can erode personal relationships and physical health. Sonia Singh, Rolling Stone, 3 Feb. 2025 As for the minority serving a sentence upon conviction, that sentence is never permanent injury, untreated health conditions or death. New York Daily News Editorial Board, New York Daily News, 28 Jan. 2025 See All Example Sentences for untreated

Word History

First Known Use

15th century, in the meaning defined above

Time Traveler
The first known use of untreated was in the 15th century

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Cite this Entry

“Untreated.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/untreated. Accessed 4 Mar. 2025.

Medical Definition

untreated

adjective
un·​treat·​ed -ˈtrēt-əd How to pronounce untreated (audio)
: not subjected to treatment
an untreated disease

More from Merriam-Webster on untreated

Last Updated: - Updated example sentences
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