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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Paluel is also one of the many power stations that draws seawater directly from the ocean as a coolant for its inner workings. Atharva Gosavi, Interesting Engineering, 5 Sep. 2025 Like France, both of these plants draw seawater directly from the coast. Theo Burman shane Croucher, MSNBC Newsweek, 4 Sep. 2025 As carbon emissions increase, the ocean is absorbing more carbon dioxide from the atmosphere, lowering pH levels and making seawater more acidic, a process that can affect many ocean species and ecosystems. Katie Hunt, CNN Money, 27 Aug. 2025 Based on tests conducted in a study published August 27 in the journal Frontiers in Marine Science, the seawater pH forecast for the year 2300 damages shark teeth, leaving them full of tiny holes and cracks. Lauren Leffer, Popular Science, 27 Aug. 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 11 Sep. 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

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