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A Writer's Dictionary:

osmium Definition


Dictionary Home » Words Starting with O » oscillation ... Ostpolitik » osmium


osmium
noun
    1. chem.
      (symbol Os, atomic number 76) a very hard dense bluish-white metal, the densest known element, used as a catalyst, and as a hardening agent in alloys with platinum and iridium, eg in pen nibs.
Etymology: 19c: from Greek osme smell (because of the unpleasant pungent smell of one of its forms, osmium tetroxide) + -ium.



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