Hypertext Webster Gateway: "manganese"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
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, but easily
oxidized. Its ores occur abundantly in nature as the minerals
pyrolusite, manganite, etc. Symbol Mn. Atomic weight 54.8.
Note: An alloy of manganese with iron (called ferromanganese)
is used to increase the density and hardness of steel.
{Black oxide of manganese}, {Manganese dioxide or 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.
{Manganese bronze}, an alloy made by adding from one to two
per cent of manganese to the copper and zinc used in
brass.
From WordNet (r) 1.7 (wn)
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}]
Additional Hypertext Webster Gateway Lookup
Gateway by dict@stokkie.net
stock only wrote the gateway and does not have any control over the contents;
see the Webster Gateway FAQ,
and also the Back-end/database links and credits.