What does desalt mean?
Desalt is a transitive verb meaning to remove salt from a substance, most commonly from seawater or brackish water to render it fit for drinking, irrigation, or industrial use, and occasionally from foods such as cured meats, olives, or salted fish to make them palatable. It belongs chiefly to scientific, engineering, and environmental registers: engineers speak of desalting plants, membranes, and processes, while cooks may desalt ingredients by soaking or rinsing them. Closely related terms such as desalinate and desalinize carry the same meaning and are often preferred in general prose, with desalination serving as the standard noun for the industrial process. As global freshwater supplies come under strain, the word has gained prominence in public discourse about water security and climate adaptation. Its roots lie in the Latin sal, meaning salt, which also underlies words like saline and salary.
verbTo remove salt from something, especially from seawater or brackish water to make it drinkable, or from food to reduce its saltiness.
- To remove salt from water, especially seawater, to make it potable or usable.
- To remove excess salt from food or other substances.
"The plant desalts seawater to supply fresh drinking water to the coastal city."
"Modern desalination facilities can desalt millions of gallons of ocean water each day."
"Soak the cured ham in cold water overnight to desalt it before cooking."
The word 'salary' traces back to Roman soldiers' salt allowance — so every time a desalting plant runs, it's undoing the very mineral we once got paid in.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of desalt
Desalt is formed by prefixing the privative prefix de- ('removal' or 'reversal') onto salt, a word of Old English origin derived from Proto-Germanic *saltą. The Latin cognate sal gives English a family of related borrowings including saline, salinity, sauce, salad, and salary — the last reflecting the Roman practice of paying allowances connected with salt. Desalt emerged as a modern technical formation alongside desalinate and desalinize during the era of large-scale water treatment.
How desalt is actually used
Mostly technical or scientific in register; 'desalinate' and 'desalinization' are more common in everyday and policy discussions of water treatment. The transitive use with food is less frequent but well attested.
Easily confused with desalt
A decal is a decorative transfer or sticker, whereas desalt is a verb meaning to remove salt from water or food.