mouthwash

noun

mouth·​wash ˈmau̇th-ˌwȯsh How to pronounce mouthwash (audio)
-ˌwäsh
: a usually antiseptic liquid preparation for cleaning the mouth and teeth or freshening the breath

Examples of mouthwash in a Sentence

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.
Other mouthwashes for cankers are single-ingredient antimicrobial rinses. Matt Fuchs, TIME, 26 Feb. 2025 Dissenters also say fluoride can be received from other sources other than water, such as toothpaste or mouthwash. Evan Moore, Charlotte Observer, 21 Feb. 2025 Some preliminary studies have even shown that aloe can be used as mouthwash. Daisy Jones, Vogue, 1 Feb. 2025 Use an antibacterial mouthwash to reduce bacteria in your mouth and prevent gum disease. Anna Giorgi, Verywell Health, 10 Jan. 2025 See All Example Sentences for mouthwash

Word History

First Known Use

1840, in the meaning defined above

Time Traveler
The first known use of mouthwash was in 1840

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Cite this Entry

“Mouthwash.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mouthwash. Accessed 13 Mar. 2025.

Kids Definition

mouthwash

noun
mouth·​wash ˈmau̇th-ˌwȯsh How to pronounce mouthwash (audio)
-ˌwäsh
: a liquid that usually kills germs and is used to clean the mouth and teeth and freshen the breath

Medical Definition

mouthwash

noun
: a liquid preparation (as an antiseptic solution) for cleansing the mouth and teeth

called also collutorium

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