Definition of protosalt in English:

protosalt

noun

Chemistry
rare
  • A salt in which the anion occurs in the smallest possible proportion relative to the metal cation (i.e. in which the metal occurs in its lowest oxidation state).

Origin

Early 19th century; earliest use found in Michael Faraday (1791–1867), natural philosopher, scientific adviser, and Sandemanian. From proto- + salt.

Pronunciation

protosalt

/ˈprəʊtə(ʊ)sɔːlt//ˈprəʊtə(ʊ)sɒlt/