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.
Long ago, when our ancestors lived in oceans, the cells of those early lifeforms evolved to thrive in a solution as salty as seawater. Jenny Lehmann, Discover Magazine, 28 Mar. 2025 Making some noise The scientists housed the sharks in large marine laboratory tanks, maintained with proper seawater conditions and food, from May 2021 to April 2022. Julianna Bragg, CNN, 25 Mar. 2025 These hydroxide and bicarbonate ions react with other natural ions in seawater, producing solid minerals that gather at the electrodes. Michael Irving, New Atlas, 19 Mar. 2025 As seawater creeps further into coastlines, salt threatens to pollute the freshwater reserves that people depend on. Ars Technica, 19 Mar. 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 4 Apr. 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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