Definition of platinum Platinum

/plæˈtnʌm/ - [planum] - plat•i•num

We found 11 definitions of platinum from 7 different sources.

What does platinum mean?

WordNet

Noun

Plural: platinums

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

Pt, atomic number 78

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Wiktionary

platinum (Noun)
The metallic chemical element with atomic number 78 and symbol Pt.
platinum (Noun)
A whitish grey colour, like that of the metal.
platinum (Noun)
A single or album that has achieved platinum sales, i. e. over 1 million or 2 million.
platinum (Adjective)
Of a whitish grey colour, like that of the metal.
platinum (Adjective)
Of a musical recording that has sold over one million copies for singles, or two million for albums.

Webster DictionaryWebster's Unabridged Dictionary 📘

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 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.

OmegaWiki DictionaryOmegaWiki Dictionary Ω

platinum
A ductile malleable silvery-white metallic element very resistant to heat and chemicals. It occurs free and in association with other platinum metals, especially in osmiridium; used in jewellery, laboratory apparatus, electrical contacts, dentistry, electroplating, and as a catalyst.

Chambers DictionaryChamber's 20th Century Dictionary 📕

platinum
plat′in-um, n. an important metal of a dim silvery appearance, between gold and silver in value, and very difficult to melt—older name Plat′ina.—adjs. Platin′ic; Platinif′erous.—v.t. Plat′inise, to coat with platinum.—ns. Plat′inoid, one of the metals with which platinum is always found associated—palladium iridium, &c.; Plat′inotype, a method of producing photographs by means of paper coated with a preparation of platinum: a picture so produced.—adj. Plat′inous, containing or consisting of platinum. [Sp. platina—plata, plate.]

Wikipedia

Platinum is a soft, heavy, white metal. It is a precious metal, not a common metal. It usually costs more than gold.

In chemistry, platinum is element number 78. It has an atomic weight of 195 a.m.u. The symbol for platinum is Pt, from Spanish "platina" meaning "little silver".

Platinum is very malleable and ductile, which means it can be hammered into thin sheets and it can be pulled into wire. Platinum is very stable. Acids do not effect platinum. In the ninties lots and lots of urban people began wearing platinum as opposed to gold. White gold never became popular amongst America's urban population, thus Platinum originated the whole bling bling revolution.

The most common use of Platinum is in a vehicle catalytic converter.