- noun a metallic trace element. It is essential for biological life and is also used in making steel.
- A pinkish-gray, lustrous, and brittle chemical element with atomic number 25. It has four allotropic forms, is reactive, and has about 20 isotopes, of which one is stable. It is used in many alloys, including those which are ferromagnetic, and in batteries. Its chemical symbol is Mn.
- chemical symbolMn
Information & Library Science
- abbreviation in Internet addresses, the top-level domain for Mongolia