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
Origin of osmiumModL: so named (1804) by S. Tennant (1761-1815), Eng chemist ; from Classical Greek osm?, odor (from the odor of one of its oxides) + -ium
A bluish-white, hard, brittle and extremely dense metallic element, found in small amounts in osmiridium, nickel, and platinum ores. It is used as a platinum hardener and in making pen points, phonograph needles, instrument pivots, and other wear-resistant items. Atomic number 76; atomic weight 190.2; melting point 3,033°C; boiling point 5,012°C; specific gravity 22.587; valence 2, 3, 4, 6, 8. See Periodic Table.
Origin of osmiumFrom Greek osm&emacron;, smell (from the strong odor of osmium tetroxide).
- a heavy metallic chemical element (symbol Os) with an atomic number of 76
From Ancient Greek á½€ÏƒÎ¼Î® (osmÄ“, “smell") (because of the strong smell of its oxide) + -ium