- the salt water in or from the sea.
Origin of seawater
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for seawater
The seawater once covering 26,000 square miles vanishes into desert.The Aral Sea's Disappearing Act
October 4, 2014
Anguilla is an arid, flat Caribbean island surrounded on all sides by seawater.
And for that, it turned to the one resource it has in abundance—aside from seawater.
The seawater was higher than the fire hydrants, and the firefighters had to duck down into it to connect the hose.Heroism in the Rockaways After Hurricane Sandy
November 6, 2012
Five feet of seawater tore through the streets of the low-lying Brooklyn neighborhood Monday night.Residents in Red Hook, Brooklyn, Assess the Damage After Sandy
October 31, 2012
It is also worth asking why fresh water freezes, but seawater does not.
It is stained with seawater, and emits the musty smell which tells of immersion.The Life of Captain Matthew Flinders
It looked like spirits or vinegar, but was, as I discovered, seawater for the aquarium.Six to Sixteen
Juliana Horatia Ewing
This could, however, only now be looked upon as lost; for the seawater must have spoilt everything eatable.On Board the Esmeralda
John Conroy Hutcheson
A few biscuits, made savory by soaking them in seawater, a tuft of samphire gathered from the beach, and an apple for the dessert.Footprints on the Sea-Shore (From "Twice Told Tales")
- 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.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.