seawater

noun

sea·​wa·​ter ˈsē-ˌwȯ-tər How to pronounce seawater (audio)
-ˌwä-
: water in or from the sea

Examples of seawater 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.
The video showed the team’s standard white jersey being pelted by what looked like rain and seawater, with a bell tolling in the background. Zack Cox, Boston Herald, 25 July 2025 The mixture of hydrothermal fluid and seawater creates the ideal temperatures and chemical conditions that thermophiles need to live and grow. James F. Holden, The Conversation, 21 July 2025 Vibrio vulnificus, a bacterium that typically lives in warm, brackish seawater, can infect people who eat raw or undercooked shellfish, particularly oysters. Muri Assunção, New York Daily News, 17 July 2025 The fuel sources—tritium and deuterium—come from easily accessible sources, namely seawater and lithium, and should be cheap to produce compared to fossil fuels. Justin Worland, Time, 17 July 2025 See All Example Sentences for seawater

Word History

First Known Use

before the 12th century, in the meaning defined above

Time Traveler
The first known use of seawater was before the 12th century

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Cite this Entry

“Seawater.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/seawater. Accessed 5 Aug. 2025.

Kids Definition

seawater

noun
sea·​wa·​ter ˈsē-ˌwȯt-ər How to pronounce seawater (audio)
-ˌwät-
: water in or from the sea

More from Merriam-Webster on seawater

Last Updated: - Updated example sentences
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