 3 definitions found
From WordNet (r) 2.0 [wn]:
osmium
noun: a hard brittle blue-gray or blue-black metallic element that
is one of the platinum metals; the heaviest metal known
[syn: {Os}, {atomic number 76}]
From The Collaborative International Dictionary of English v.0.44 [gcide]:
osmium \os"mi*um\ ([o^]z"m[i^]*[u^]m), noun [Gr. 'osmh' a smell,
odor, akin to 'o'zein to smell. So named in allusion to the
strong chlorinelike odor of osmic tetroxide. See {Odor}.]
(Chem.)
A rare metallic element of the platinum group with atomic
number 76. It is found native as an alloy in platinum ore,
and in iridosmine. It is a hard, infusible, bluish or grayish
white metal, and the heaviest substance known. Its tetroxide
is used in histological experiments to stain tissues. Symbol
{Os}. Atomic weight 190.2. Specific gravity 22.477.
[1913 Webster +PJC]
From Elements database 20001107 [elements]:
osmium
Symbol: Os
Atomic number: 76
Atomic weight: 190.2
Hard blue-white metallic transition element. Found with platinum and used
in some alloys with platinum and iridium.
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