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.
Engineers deployed and connected a vertical seawater intake riser, a key structure that draws cold water from deep below the surface. Sujita Sinha, Interesting Engineering, 23 Apr. 2026 Scientists monitored seawater, fish and seaweed to track how radioactive materials moved and changed over time. Eduardo B. Farfán, The Conversation, 21 Apr. 2026 Historically, there have been 28 events in which seawater flooding impacted at least 60% of the city, according to the paper. Julia Jacobo, ABC News, 16 Apr. 2026 Propelled by waves, seawater funnels through narrow slots in the rocks, filling the natural pool with frothy, bubbly water heated by the sun. Carley Rojas Avila, Travel + Leisure, 15 Apr. 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 28 Apr. 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

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster