/mang"geuh nuyt'/ , n.
1. a gray to black mineral, hydrous manganese oxide, MnO(OH); gray manganese ore.
2. Chem. any of a series of salts containing tetravalent manganese and derived from either of two acids, H 4 MnO 4 or H 2 MnO 3 .
[ 1820-30; MANGAN(ESE) + -ITE 1 ]