seawater

sea·wa·ter  (swôtr, -wtr)

n.

The salt water in or coming from the sea or ocean.

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seawater  (swôtr)

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.

Thesaurus

Noun

1.

seawater - water containing salts; "the water in the ocean is all saltwater" brine, saltwater atomic number 35, Br, bromine - a nonmetallic heavy volatile corrosive dark brown liquid element belonging to the halogens; found in sea water atomic number 53, I, iodin, iodine - a nonmetallic element belonging to the halogens; used especially in medicine and photography and in dyes; occurs naturally only in combination in small quantities (as in sea water or rocks) atomic number 19, potassium, K - a light soft silver-white metallic element of the alkali metal group; oxidizes rapidly in air and reacts violently with water; is abundant in nature in combined forms occurring in sea water and in carnallite and kainite and sylvite atomic number 11, Na, sodium - a silvery soft waxy metallic element of the alkali metal group; occurs abundantly in natural compounds (especially in salt water); burns with a yellow flame and reacts violently in water; occurs in sea water and in the mineral halite (rock salt) common salt, sodium chloride - a white crystalline solid consisting mainly of sodium chloride (NaCl) H2O, water - binary compound that occurs at room temperature as a clear colorless odorless tasteless liquid; freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade; widely used as a solvent calcium chloride - a deliquescent salt; used in de-icing and as a drying agent red tide - seawater that is discolored by large numbers of certain dinoflagellates that produce saxitoxin evaporite - the sediment that is left after the evaporation of seawater