Definition of PLATINUM. Meaning of PLATINUM. Synonyms of PLATINUM

Here you will find one or more explanations in English for the word PLATINUM. Also in the bottom left of the page several parts of wikipedia pages related to the word PLATINUM and, of course, PLATINUM synonyms and on the right images related to the word PLATINUM.

Definition of PLATINUM

Platinum
Platinum Plat"i*num, n. [NL., fr. Sp. platina, from plata silver, LL. plata a thin plate of metal. See Plate, and cf. Platina.] (Chem.) 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 crucibles, for stills for sulphuric acid, rarely for coin, and in the form of foil and wire for many purposes. Specific gravity 21.5. Atomic weight 194.3. Symbol Pt. Formerly called platina. Platinum black (Chem.), a soft, dull black powder, consisting of finely divided metallic platinum obtained by reduction and precipitation from its solutions. It absorbs oxygen to a high degree, and is employed as an oxidizer. Platinum lamp (Elec.), a kind of incandescent lamp of which the luminous medium is platinum. See under Incandescent. Platinum metals (Chem.), the group of metallic elements which in their chemical and physical properties resemble platinum. These consist of the light platinum group, viz., rhodium, ruthenium, and palladium, whose specific gravities are about 12; and the heavy platinum group, viz., osmium, iridium, and platinum, whose specific gravities are over 21. Platinum sponge (Chem.), metallic platinum in a gray, porous, spongy form, obtained by reducing the double chloride of platinum and ammonium. It absorbs oxygen, hydrogen, and certain other gases, to a high degree, and is employed as an agent in oxidizing.

Meaning of PLATINUM from wikipedia

- Platinum is a chemical element; it has symbol Pt and atomic number 78. It is a dense, malleable, ductile, highly unreactive, precious, silverish-white...
- certification categories, which are named after precious materials (gold, platinum and diamond). The threshold required for these awards depends upon the...
- up platinum, platinic, or platinous in Wiktionary, the free dictionary. Platinum is a chemical element with symbol Pt and atomic number 78. Platinum may...
- Look up platinum blonde in Wiktionary, the free dictionary. Platinum blonde is a color of blonde hair. Platinum Blonde may also refer to: Platinum Blonde...
- Platinum End (****anese: プラチナエンド, Hepburn: Purachina Endo) is a ****anese manga series written by Tsugumi Ohba and illustrated by Takeshi Obata. It was serialized...
- Platinum OG is a 75/25 indica dominant hybrid bred by Apothecary Genetics. It is believed that it stems from the combination of Master Kush, OG Kush, and...
- Platinum black (Pt black) is a fine powder of platinum with good catalytic properties. The name of platinum black is due to its black color. It is used...
- A platinum jubilee is a celebration held to mark an anniversary. Among monarchies, it usually refers to a 70th anniversary. The most recent monarch to...
- outlets. The ****ociation is po****rly known for its traditional gold and platinum certification of albums and songs in the United States and also parti****tes...
- Pokémon Platinum Version is a 2008 role-playing video game developed by Game Freak and published by The Pokémon Company and Nintendo for the Nintendo DS...