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1. (n.) osmium
a hard, heavy, metallic element, densest of the known elements, able to form compounds with a valence of eight: used chiefly as a catalyst, in alloys, and in the manufacture of electric-light filaments.
Etymology: (1795–1805; < NL = Gk osm(ē) smell + NL -ium -ium2; so named from the penetrating odor of one of its oxides)
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| Definition of 'Osmium' |
Princeton's WordNet |
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1. (noun) osmium, Os, atomic number 76
a hard brittle blue-grey or blue-black metallic element that is one of the platinum metals; the heaviest metal known
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| Definition of 'Osmium' |
U.S. National Library of Medicine |
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1. Osmium
Osmium. A very hard, gray, toxic, and nearly infusible metal element, atomic number 76, atomic weight 190.2, symbol Os. (From Dorland, 28th ed)
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Definitions of Osmium 
