seawater

American  

[see-waw-ter, -wot-er] / ˈsiˌwɔ tər, -ˌwɒt ər /

noun

1. the salt water in or from the sea.

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seawater Scientific  

/ sē′wô′tər /

1. Salt water, normally with a salinity of 35 parts per thousand (3.5%), in or coming from the sea or ocean. Although seawater contains more than 70 elements, most seawater salts are ions of six major elements: chloride, sodium, sulfate, magnesium, calcium, and potassium. The major sources of these salts are underwater volcanic eruptions, chemical reactions involving volcanic matter, and chemical weathering of rocks on the coasts. Seawater is believed to have had the same salinity for billions of years.

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Etymology

Origin of seawater

before 1000; Middle English see water, Old English sǣwæter; sea, water

Example Sentences

The scientists believe that the nodules give off enough electric charge to split seawater into hydrogen and oxygen, a process known as electrolysis.

From Barron's

That lasted until March, when the water was so cold, my face went numb and I started swallowing seawater because I couldn’t tell my mouth was open.

From The Wall Street Journal

Opened in 1971, it was the second Magnox power station in Wales after Trawsfynydd came online six years earlier, with seawater an ideal coolant due to its location on Anglesey's northern coast.

From BBC

Despite working for two weeks - baiting the ocean, taking samples of seawater to search for shark DNA and using underwater cameras - the researchers did not manage to find any animals to tag.

From BBC

The idea was that cold Scottish seawater would improve the efficiency of air-based cooling systems inside the device.

From BBC