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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In another development, Genuine H2 and researchers from Brunel University of London plan to turn seawater into hydrogen that can be used as fuel. Aman Tripathi, Interesting Engineering, 9 Oct. 2025 The cycle swings between warmer and cooler seawater in a region along the equator in the tropical Pacific. Doyle Rice, USA Today, 9 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 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 20 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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