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.
And then there’s sea salt, made from evaporated seawater and has trace amounts of minerals. — Susan Selasky, Freep.com, 28 Aug. 2026 If the composite can maintain its performance in seawater, it could eventually be used in offshore power plants, marine energy islands and marine ranches. — Neetika Walter, Interesting Engineering, 28 Aug. 2026 The forecast for the upcoming winter is particularly tough to pin down because of the strengthening El Niño, a natural warming of seawater in the Pacific Ocean, and its interactions with the polar vortex. — Mike Snider, USA Today, 28 Aug. 2026 In Portugal, the SIN01 AI data center in Sines uses seawater from the Atlantic to cool its servers before returning it to the ocean. — Nir Kshetri, The Conversation, 17 Aug. 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

See All Rhymes for seawater

Browse Nearby Words

sea watch
seawater
sea-water green
See all Nearby Words

Cite this Entry

“Seawater.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/seawater. Accessed 3 Sep. 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

Last Updated: - Updated example sentences
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