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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The rainwater is said to have mixed with mineral-rich sediment and seawater, creating a vivid, blood-red scene. Emma Bussey, FOXNews.com, 18 Dec. 2025 Aida and his team aimed to design a plastic that responds naturally to seawater without complex processing. Aamir Khollam, Interesting Engineering, 16 Dec. 2025 The cycle swings between warmer and cooler seawater in a region along the equator in the tropical Pacific. Marina Johnson, Louisville Courier Journal, 12 Dec. 2025 The cycle swings between warmer and cooler seawater in a region along the equator in the tropical Pacific. Doyle Rice, USA Today, 11 Dec. 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 24 Dec. 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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