seawater

noun

sea·​wa·​ter ˈsē-ˌwȯ-tər 

-ˌwä-

: water in or from the sea

Examples of seawater in a Sentence

Recent Examples on the Web

The video showed the team’s standard white jersey being pelted by what looked like rain and seawater, with a bell tolling in the background. —Zack Cox, Boston Herald, 25 July 2025

The mixture of hydrothermal fluid and seawater creates the ideal temperatures and chemical conditions that thermophiles need to live and grow. —James F. Holden, The Conversation, 21 July 2025

Vibrio vulnificus, a bacterium that typically lives in warm, brackish seawater, can infect people who eat raw or undercooked shellfish, particularly oysters. —Muri Assunção, New York Daily News, 17 July 2025

The fuel sources—tritium and deuterium—come from easily accessible sources, namely seawater and lithium, and should be cheap to produce compared to fossil fuels. —Justin Worland, Time, 17 July 2025

Word History

First Known Use

before the 12th century, in the meaning defined above

Rhymes for seawater

• backwater
• bathwater
• blackwater
• breakwater
• deepwater
• edgewater
• feedwater
• floodwater
• freshwater
• granddaughter
• groundwater
• headwater

Kids Definition

seawater

noun

sea·​wa·​ter ˈsē-ˌwȯt-ər 

-ˌwät-

: water in or from the sea