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.
Past changes have pushed the glacier into a retreat that may be difficult to reverse, while new modeling suggests scientists may have underestimated how warm seawater reaches beneath it. — Kaif Shaikh, Interesting Engineering, 17 Oct. 2026 The scientists are planning to travel there in 2028 to deploy instruments able to document the flushing in and out of seawater. — Laura Paddison, CNN Money, 15 Oct. 2026 The 25-pound device, set to start shipping this fall, produces up to six gallons of drinking water per hour from seawater. — Matthew Huff, Time, 15 Oct. 2026 The greatest concern is high tide through Sunday morning and swells from the remnants of Tropical Storm Rachel could create dangerous conditions with beach erosion and seawater once again flooding beach roads and paths. — ABC News, 11 Oct. 2026 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

Rhymes for seawater

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Browse Nearby Words

sea watch
seawater
sea-water green
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Cite this Entry

“Seawater.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/seawater. Accessed 20 Oct. 2026.

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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

Britannica.com: Encyclopedia article about seawater

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