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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However, one of the stumbling blocks on this pathway is borate, which is a family of common compounds found in seawater. Keith Cooper, Space.com, 5 Jan. 2026 In a savvy environmental move, the resort pumps in cold seawater to feed the air-conditioning system and for use at the spa. Condé Nast, Condé Nast Traveler, 31 Dec. 2025 Thalassotherapy, a medical cure that uses the power of seawater, involves a circuit of 10 to 15 minutes in each of four pools, each with varying salt densities, jets, and water temperatures to promote cleansing, relaxation, and detoxification. Patricia Doherty, Travel + Leisure, 30 Dec. 2025 In 2018, Microsoft deployed a submarine-like data center 117 feet below sea level to take advantage of the cooling benefits of seawater and tidal power to enable the project to be powered fully by renewable energy. April Roach, CNBC, 29 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

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Cite this Entry

“Seawater.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/seawater. Accessed 9 Jan. 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

Last Updated: - Updated example sentences
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