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Osmium

see synonyms of osmium

Noun

1. atomic number 76, os, osmium

a hard brittle blue-grey or blue-black metallic element that is one of the platinum metals; the heaviest metal known

WordNet Lexical Database for English. Princeton University. 2010.

Osmium

see synonyms of osmium
noun
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

Collins English Dictionary. Copyright © HarperCollins Publishers

Osmium

see synonyms of osmium
noun
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
see the periodic table of elements in the Reference Supplement

Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt. All rights reserved.

Osmium

see synonyms of osmium
n. Symbol Os
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.

The American Heritage ® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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