• WordNet 3.6
    • n platinum a heavy precious metallic element; grey-white and resistant to corroding; occurs in some nickel and copper ores and is also found native in some deposits
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Webster's Revised Unabridged Dictionary
  • Interesting fact: The most expensive shoes in the world are ruby slippers located in Harrods in London, which cost $1.6 million, has a full time security guard. The shoes are made from platinum thread and has 642 rubies in them. It took over 700 hours to produce the shoe
    • n Platinum (Chem) A metallic element of atomic number 78, one of the noble metals, classed with silver and gold as a precious metal, occurring native or alloyed with other metals and also as the platinum arsenide (sperrylite). It is a heavy tin-white metal which is ductile and malleable, but very infusible (melting point 1772° C), and characterized by its resistance to strong chemical reagents. It is used for crucibles in laboratory operations, as a catalyst, in jewelry, 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 195.1. Symbol Pt. Formerly called platina.
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Century Dictionary and Cyclopedia
  • Interesting fact: An ounce of platinum can be stretched 10,000 feet.
    • n platinum Chemical symbol, Pt; atomic weight, 194.9. An important metal, introduced into Europe about the middle of the eighteenth century from South America. It does not occur as an ore, but alloyed with other metals, especially with rhodium, osmium, iridium, and palladium, all of which, together with iron, copper, and gold, are almost always present in it in small quantity in what is called its native state. Platinum is surpassed in ductility only by gold and silver, and in malleability only by those metals and copper. It is easily rolled into sheets or drawn into wire. Its specific gravity is 21.5, which is higher than that of any other known substance except osmium and iridium. It. is not oxidized in the air at any temperature, and is not attacked by any of the simple acids. It is infusible in the strongest heat of a blast-furnace, but can be melted in the flame of the oxyhydrogen blowpipe or by means of the electric current. It is a rare metal, and the regions which supply it are few. Most of the platinum of commerce conies from the Urals, South America, and Borneo. It is used chiefly in chemical manufacture and analysis, where its resistance to heat and acids is of special value, and in electrical work. It was used for coinage in Russia from 1823 to 1845.
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Chambers's Twentieth Century Dictionary
  • Interesting fact: All the platinum ever mined would fit into an average-sized living-room
    • n Platinum plat′in-um an important metal of a dim silvery appearance, between gold and silver in value, and very difficult to melt—older name Plat′ina
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  • Hilaire Belloc
    “I shoot the Hippopotamus with bullets made of platinum, because if I use the leaden one his hide is sure to flatten em.”


Webster's Revised Unabridged Dictionary
NL., fr. Sp. platina, from plata, silver, LL. plata, a thin plate of metal. See Plate, and cf. Platina
Chambers's Twentieth Century Dictionary
Sp. platinaplata, plate.


In literature:

Someone told him it had a lot of platinum in it.
"Dick Hamilton's Fortune" by Howard R. Garis
To the other a platinum tube 10 cm.
"Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4" by Various
A platinum blonde, two tables away, had been eying Murt.
"Mate in Two Moves" by Winston Marks
Platinum, you call it.
"The Great Keinplatz Experiment and Other Tales of Twilight and the Unseen" by Sir Arthur Conan Doyle
The grand entrance on the north side was constructed of alternating pillars of platinum and gold, all three feet in thickness.
"The Goddess of Atvatabar" by William R. Bradshaw
In flame on platinum wire.
"The Elements of Blowpipe Analysis" by Frederick Hutton Getman
Angelo Sepia, unlike most Sepia Platinum Papers, develops in a cold solution.
"Kodaks and Kodak Supplies, 1914" by Canadian Kodak Company
Similarly, spongy platinum accelerates the oxidation of sulfur dioxide to sulfur trioxide, in the commercial manufacture of sulfuric acid.
"The Chemistry of Plant Life" by Roscoe Wilfred Thatcher
Various materials are used as supports for substances in the blowpipe flame; the principal are charcoal, platinum and glass or porcelain.
"Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 1" by Various
Down by the creek the frogs boomed out, and platinum mists lay dreamily between their soft emphases of shadow.
"The Tempering" by Charles Neville Buck

In poetry:

I shoot the Hippopotamus
With bullets made of platinum,
Because if I use leaden ones
His hide is sure to flatten 'em.
"The Hippopotamus" by Hilaire Belloc
Her platinum wand made water wrinkles buckle;
Old Julius gave appreciative chuckle;
"It's jes about hag-hollerin' time," he said.
I watched the globous buckeyes in his head
"Hag-Hollerin' Time" by William Hervey Allen Jr

In news:

Not even a month after we confessed our love of super chic and sexy platinum cropped cuts, Ashlee Simpson-Wentz goes and debuts a more punky version of the trend.
Massive Portfolio's Platinum- Plated Debut.
Altogether, the look screamed Pop Art without a platinum wig or the bright blue we saw everywhere this season.
This blog series profiles a new prefab development in San Francisco's SOMA neighborhood—a LEED Platinum-targeted building containing 23 "micro-studios".
It's designed to gain LEED platinum certification.
Mobile IQ purchase is the first since Quark's acquisition by Platinum Equity.
Mobile IQ purchase is the first since Quark 's acquisition by Platinum Equity.
Ratt left San Diego in the '80s and scrabbled to the big prize in L.A. With their triple-platinum debut LP.
New jobs are headed to Reading, all thanks to a multi-platinum rock band from York.
Grieb & Benzinger thus presents a world first: a visible Patek Philippe tourbillon refurbished according to the boutique brand's own decorative style and encased in a custom platinum case.
Initially, the union of Kojima Productions and Platinum Games seemed nothing short of unholy.
1 platinum producer Anglo American Platinum (Amplats) said on Monday it was too early to tell whether South African miners on an illegal strike will return after the company told them to resume work or face sacking .
Morehouse graduates bring us the first Platinum condom.
Orms, who pleaded guilty in February, operated the scheme between 2003 and 2006 through Platinum Mortgage, Edison Mortgage, Prime Real Estate and other companies.
Kiss Tomorrow Goodbye' became such a favorite of Bryan 's that he included the song on his platinum-selling 'Tailgates and Tanlines' album.

In science:

This work was partially supported by National Computational Science Alliance under grant AST020003N and utilized the NCSA Platinum system.
Precision Primordial $^4$He Measurement with CMB Experiments
Two types of events were selected for the analysis: the Platinum and the Golden events. • Platinum events: an event is tagged as platinum by requiring one single hit in each of the four chambers.
MICROMEGAS chambers for hadronic calorimetry at a future linear collider
The spectrum was built using Platinum events (left).
MICROMEGAS chambers for hadronic calorimetry at a future linear collider
On the other hand, many parts and components contain valuable raw materials like gold, copper, titanium and even platinum, albeit mostly in very small amounts.
Modern consumerism and the waste problem
The thermometers were platinum Resistance Temperature Detectors (RTDs), read out using a set of multiplexed Lakeshore temperature monitoring units.
The LUX Prototype Detector: Heat Exchanger Development