Symbol Mn, Metal Used in Stainless Steels
Puzzle 4 of Periodic Table Medium Pack
Question is: Symbol Mn, Metal Used in Stainless Steels
and the answer is: MANGANESE
Word Meaning:
MANGANESE — (uncountable) A metallic chemical element (symbol Mn) with an atomic number of 25, not a free element in nature but often found in minerals in combination with iron, and useful in industrial alloy production.
Definitions from Wiktionary.