OSMIUM 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 22.47…
PALLADIUM n.
A rare metallic element of the light platinum group, found native, and also alloyed with platinum and gold. It is a silver-white metal resembling platinum, and like it permanent and untarnished in the air, but is more easily fusible. It is unique in its power of occluding hydrogen, which it does to the extent of nearly…
PEWTER n.
A hard, tough, but easily fusible, alloy, originally consisting of tin with a little lead, but afterwards modified by the addition of copper, antimony, or bismuth.
PLATINUM n.
A metallic element, intermediate in value between silver and gold, occurring native or alloyed with other metals, also as the platinum arsenide (sperrylite). It is heavy tin-white metal which is ductile and malleable, but very infusible, and characterized by its resistance to strong chemical reagents. It is used for cr…
QUEEN n.
ily, having an herbaceous stem and a perennial woody root. -- Queen's metal (Metal.), an alloy somewhat resembling pewter or britannia, and consisting essentially of tin with a slight admixture of antimony, bismuth, and lead or copper. -- Queen's pigeon. (Zoöl.) Same as Queen pigeon, above. -- Queen's ware, glazed E…