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desalination

American  
[dee-sal-uh nay-shuhn] / diˌsæl ə ˈneɪ ʃən /

noun

  1. Chemistry. the intentional removal of salt from something, especially seawater, by any of various means, often reverse osmosis.


desalination British  
/ diːˌsælɪˈneɪʃən /

noun

  1. the process of removing salt, esp from sea water so that it can be used for drinking or irrigation

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Explanation

When salt and other minerals are removed from soil or water, it's called desalination. Desalination can make sea water safe to drink. The term desalination adds the prefix de-, "undo," to salination, "adding salt." The salty heart of the word is saline, "containing or made of salt." The complex process of water desalination involves using electricity or extreme heat, and it's very expensive. Still, many people around the world depend on desalination of ocean water for drinking and watering crops.

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

They have targeted civilian infrastructure, including water desalination plants and energy installations, along with bases hosting American troops.

From Barron's Aug. 25, 2026

The NOC condemned similar attacks in past days in Zawiya, including two drone strikes on a naphtha reservoir and a water desalination plant.

From BBC Aug. 11, 2026

He specifically instructed NOAA, which is under his purview, to take offshore oil production, pipeline maintenance, spaceport infrastructure, desalination projects and undersea cables into consideration, citing national priorities and economic interests.

From Los Angeles Times Aug. 11, 2026

For example, the importance of energy transition has increased since the start of the Ukraine war, while recurrent European droughts are driving companies to “invest very heavily” in water resources and desalination plants.

From MarketWatch Aug. 11, 2026

With desalination units being set up along the coast, she figures there’ll be enough water for everyone soon enough, so why not be generous?

From "Dry" by Neal Shusterman and Jarrod Shusterman

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