Define the word manganese"Manganese" gcide "The Collaborative International Dictionary of English v.0.48"
Manganese \Man`ga*nese"\, n. [F. mangan[`e]se, It. manganese,
sasso magnesio; prob. corrupted from L. magnes, because of
its resemblance to the magnet. See Magnet, and cf.
Magnesia.] (Chem.)
An element obtained by reduction of its oxide, as a hard,
grayish white metal, fusible with difficulty (melting point
1244[deg] C), but easily oxidized. Its ores occur abundantly
in nature as the minerals pyrolusite, manganite, etc. Symbol
Mn. Atomic number 25; Atomic weight 54.938 [C=12.011].
[1913 Webster +PJC]
Note: 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.
[1913 Webster]
"manganese" gcide "The Collaborative International Dictionary of English v.0.48"
Mn \Mn\, n. (Chem.)
The chemical symbol for manganese.
[PJC]
"manganese" wn "WordNet (r) 2.0"
manganese
n : a hard brittle gray polyvalent metallic element that
resembles iron but is not magnetic; used in making steel;
occurs in many minerals [syn: Mn, atomic number 25]
"manganese" elements "Elements database 20001107"
manganese
Symbol: Mn
Atomic number: 25
Atomic weight: 54.938
Grey brittle metallic transition element. Rather electropositive, combines
with some non-metals when heated. Discovered in 1774 by Scheele.
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