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Meaning of PLATINUM

Pronunciation:  'platnum

WordNet Dictionary
[n]  a heavy precious metallic element; gray-white and resistant to corroding; occurs in some nickel and copper ores and is also found native in some deposits

PLATINUM is a 8 letter word that starts with P.


 Synonyms: atomic number 78, Pt
 See Also: noble metal



Webster's 1913 Dictionary
\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.

Medical Dictionary
 Definition: A metal that is an important component of some anticancer drugs, such as cisplatin and carboplatin.
Dream Dictionary
 Definition: Seeing platinum in your dream, symbolizes success, prosperity and wealth. Your achievements and accomplishments are attributed to your determination and drive. Do not ever believe that your goals are unattainable. Alternatively, it indicates a coldness or toughness to your exterior persona.