manganese

• POS: Noun
• HYPHEN: man=ga=nese

CIDE DICTIONARY

manganese, n. [F. manganèse, It. manganese, sasso magnesio; prob. corrupted from L. magnes, because of its resemblance to the magnet. See Magnet, and cf. Magnesia.].

 An element obtained by reduction of its oxide, as a hard, grayish white metal, fusible with difficulty (melting point 1244Mn. Atomic number 25; Atomic weight 54.938 [C=12.011].  [1913 Webster]
" An alloy of manganese with iron (called ferromanganese) is used to increase the density and hardness of steel."  [1913 Webster]

Black oxide of manganese, Manganese dioxide or Manganese peroxide, or Black manganese (Chem.), a heavy black powder MnO2, occurring native as the mineral pyrolusite, and valuable as a strong oxidizer; -- called also familiarly manganese. It colors glass violet, and is used as a decolorizer to remove the green tint of impure glass.

OXFORD DICTIONARY

manganese, n.
1 Chem. a grey brittle metallic transition element used with steel to make alloys.

Usage

Symb.: Mn.
2 (in full manganese oxide) the black mineral oxide of this used in the manufacture of glass.

Derivative

manganic adj. manganous adj.

Etymology

F mangan{egrave}se f. It. manganese, alt. f. MAGNESIA