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.
Trying to pull lithium from seawater is like trying to find a single grain of sugar in a desert of salt. Mrigakshi Dixit, Interesting Engineering, 10 Feb. 2026 Then, the girl who wouldn’t touch the frigid seawater at the Allas sea pool in Helsinki waded into the swimming hole. Boris Fishman, Travel + Leisure, 8 Feb. 2026 The device, which clamps onto the line just above the hook and pairs zinc and graphite in seawater, creates a small electric field about the size of a beachball around the hook, and rattles approaching sharks. Bill Kearney, Sun Sentinel, 6 Feb. 2026 An initiative called Real Ice is trying to pump seawater atop Arctic sea ice to thicken it. Christian Elliott, The Atlantic, 31 Jan. 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

Browse Nearby Words

Cite this Entry

“Seawater.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/seawater. Accessed 13 Feb. 2026.

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

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