Manganesic a. : Manganic.

Example:


Taxonomy
manganese, manganese dioxide, oxidation state, manganese ore, iron, steel, Manganese compounds, minerals, manganese content, batteries, element, compounds, South Africa, glass, metal, Australia, magnesia, oxides.

Defination from the web:
... As a free element, manganese is a metal with important industrial metal alloy uses, particularly in stainless steels. ...