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.
Many mouthwashes contain citrus for their whitening abilities. Sherri Gordon, Health, 2 Feb. 2025 The multifunctional holder also has an automatic toothpaste dispenser and four magnetic mouthwash cups. Kaitlin Gates, Better Homes & Gardens, 16 Jan. 2025 Summary In addition to brushing and flossing, mouthwash can help support oral health. Heather Jones, Verywell Health, 5 Jan. 2025 Other mouthwashes for cankers are single-ingredient antimicrobial rinses. Matt Fuchs, TIME, 26 Feb. 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 22 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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