Meaning of OSMIUM
| Pronunciation: | | 'âzmeeum
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 WordNet Dictionary |
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| | Definition: | | [n] a hard brittle blue-gray or blue-black metallic element that is one of the platinum metals; the heaviest metal known |
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| | Synonyms: | | atomic number 76, Os |
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| | See Also: | | metal, metallic element | |
| Webster's 1913 Dictionary |
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| | Definition: | | \Os"mi*um\, n. [Gr. ? a smell, odor, akin to ? 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, 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
191.1. Specific gravity 22.477.
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