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<chemical>
Manganese dioxide, a mineral of an iron-black or dark steel-gray colour and metallic luster, usually soft. Pyrolusite parts with its oxygen at a red heat, and is extensively used in discharging the brown and green tints of glass (whence its name).
Origin: Pyro- + Gr. To loose, or a loosing.
(01 Mar 1998)
pyrolignic, pyrolithic, pyrologist, pyrology < Prev | Next > pyrolysis, pyromagnetic, pyromalate
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