transitive verb
: to precipitate, coagulate, or separate as a liquid layer or gas (a dissolved substance or lyophilic sol as a soap or protein) from a solution by the addition of salt, especially common salt ; broadly : to produce similar effects on by the addition usually of an electrolyte other than a salt
intransitive verb
1. of a saline solution : to deposit salt
2. : to become deposited by or separated from a solution
albumin and gelatin both salt out reversibly in the presence of high concentrations of the salts — J.W.McBain