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Definitions for Osmium

[1] a hard, heavy, metallic element having the greatest density of the known elements and forming octavalent compounds, as OsO4 and OsF8 : used chiefly as a catalyst, in alloys, and in the manufacture of electric-light filaments. Symbol : Os; atomic weight : 190.2; atomic number : 76; specific gravity : 22.57.
[2] a very hard brittle bluish-white metal occurring with platinum and alloyed with iridium in osmiridium: used to produce platinum alloys, mainly for pen tips and instrument pivots, as a catalyst, and in electric-light filaments. Symbol: Os; atomic no: 76; atomic wt: 190.2; valency: 0 to 8; relative density: 22.57; melting pt: 3033±30°C; boiling pt: 5012±100°C

Words nearby Osmium

osmics, osmidrosis, osmiophilic, osmious, osmiridium, osmium, osmium tetroxide, osmo-, osmolality, osmolarity, osmole

Origin of Osmium

1795–1805; < New Latin < Greek osm(ḗ ) smell + -ium -ium; named from the penetrating odor of one of its oxides

Word origin for Osmium

C19: from Greek osmē smell, so called from its penetrating odour