ALL meanings of osmium
os·mi·um
O o - noun osmium a hard, heavy, metallic element having the greatest density of the known elements and forming octavalent compounds, as OsO 4 and OsF 8 : 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. 1
- noun osmium A heavy metallic chemical element (symbol Os) with an atomic number of 76. 1
- noun osmium chemical element 1
- noun osmium 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 0
- noun osmium a very hard, bluish-white, amorphous, metallic chemical element, one of the platinum metals: it occurs in the form of an alloy with platinum and iridium and is used in pen points, electric light filaments, etc., and as a catalyst: symbol, Os; at. no., 76 0