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
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Over the course of more than ten dives, Jiaolong gathered 183 biological samples – including shrimps, sea spiders, and sea anemones – along with sediment, rock, and seawater specimens for further analysis. Bojan Stojkovski, Interesting Engineering, 5 Oct. 2025 Andrés was standing there, slightly out of breath, dripping seawater. Catherine Lacey, New Yorker, 5 Oct. 2025 At high tide, waves surge through the rocks sending seawater into plumes, sometimes up to fifty feet high. Kelsey Glennon, Southern Living, 3 Oct. 2025 Ocean acidification can have profound impacts on marine ecosystems by depleting seawater of certain carbon compounds that corals and other shell building animals need to construct their protective homes. Andrea Thompson, Scientific American, 3 Oct. 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

Browse Nearby Words

Cite this Entry

“Seawater.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/seawater. Accessed 7 Oct. 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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