MN

Multiple Entries:
  MN    Mn    manganese  

Concise Oxford English Dictionary © 2008 Oxford University Press:
MN

▶abbreviation

• 1 (in the UK) Merchant Navy.

• 2 Minnesota (in official postal use).

Concise Oxford English Dictionary © 2008 Oxford University Press:
Mn

▶symbol the chemical element manganese.

Concise Oxford English Dictionary © 2008 Oxford University Press:
manganese /ˈmaŋgəniːz/

▶noun the chemical element of atomic number 25, a hard grey metal used in special steels and magnetic alloys. (Symbol: Mn)

– derivatives
manganic adjective,
manganous adjective.

– origin C17: via Fr. from Ital. manganese, unexplained alt. of med. L. magnesia (see magnesia).