persalt
/ˈpəːsɔːlt/ /ˈpəːsɒlt/Chemistry
noun
Originally (now rare ): a salt in which the anion occurs in its greatest possible proportion relative to the metal cation. In later use: a perborate or other salt in which the anion contains a peroxide group.
Origin
Early 19th century; earliest use found in Michael Faraday (1791–1867), natural philosopher, scientific adviser, and Sandemanian. From per- + salt.