Noun. 1) A slang term used to insult the opposing pitcher of a baseball team. Is reference to the 2001 film Beer League and character Dennis Manganelli.
2. Manganese is a chemical element in the periodic table that has the symbol Mn and atomic number 25. It is a gray-white metal, resembling iron and is quite brittle.
1. That dude Elliot is manganese. Wait, he's just wapanese.
The fictional inhabitants of manga (hence the name) and anime, who are for some reason almost exclusively Caucasian in appearance, despite the fact that most of them must be Japanese by ancestry.
The Manganese have many abilities that other human beings do not. They can dramatically vary the size of their facial features as well as generate a massive drop of sweat when they encounter suitable emotional stimuli.