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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No measurable impact on marine life or the local environment was detected, as the radioactive material dilutes rapidly in seawater. Munis Raza, Interesting Engineering, 24 Mar. 2026 In response, Iran threatened to destroy the seawater desalination plants that its neighbors are dependent on, Fortune’s Jason Ma reports. Jim Edwards, Fortune, 23 Mar. 2026 Desalination, the process of creating drinkable water from seawater, is critical to supplying water across Israel and many of Iran’s Gulf neighbors. Chantal Da Silva, NBC news, 22 Mar. 2026 Blue Lagoon Skin Science’s gentle foaming cleanser, packed with microalgae, Icelandic seawater, and silica, provides both antioxidant protection and hydration. Conçetta Ciarlo, Vogue, 19 Mar. 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 27 Mar. 2026.

Kids Definition

seawater

noun
sea·​wa·​ter ˈsē-ˌwȯt-ər How to pronounce seawater (audio)
-ˌwät-
: water in or from the sea

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