Osmium
[ɒzmiәm]
Definition
(noun.) a hard brittle blue-grey or blue-black metallic element that is one of the platinum metals; the heaviest metal known.
Edited by Lelia--From WordNet
Definition
(n.) 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.
Checker: Rhonda
Definition
n. a gray-coloured metal found in platinum ore the oxide of which has a disagreeable smell.—adjs. Os′mic Os′mious.
Typist: Michael
Examples
- Osmium from a volatile compound of same thus deposited makes a filament as good as carbon when in vacuo. Frank Lewis Dyer. Edison, His Life and Inventions.
- Iridium and Osmium discovered by Tenant, and Cerium by Berzelius. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
- A great variety of methods for coating incandescent lamp filaments with silicon, titanium, chromium, osmium, boron, etc. Frank Lewis Dyer. Edison, His Life and Inventions.
Checker: Melanie