manganese : Dictionary / Wörterbuch (BEOLINGUS, TU Chemnitz)

English Dictionary: manganese	by the DICT Development Group
3 results for manganese
From WordNet (r) 3.0 (2006) [wn]:
manganese n a hard brittle grey polyvalent metallic element that resembles iron but is not magnetic; used in making steel; occurs in many minerals Synonym(s): manganese, Mn, atomic number 25
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Manganese \Man`ganese"\, n. [F. mangan[8a]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 The Elements (22Oct97) [elements]:
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.