Definitions for platinum
ˈplæt n əm, ˈplæt nəmplat·inum

Princeton's WordNetRate this definition:0.0 / 0 votes

1. platinum, Pt, atomic number 78noun

   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

GCIDERate this definition:4.0 / 1 vote

1. Platinumnoun

   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

WiktionaryRate this definition:3.0 / 1 vote

1. platinumnoun

   The metallic chemical element with atomic number 78 and symbol Pt.

2. platinumadjective

   Of a whitish grey colour, like that of the metal.

3. platinumadjective

   Of a musical recording that has sold over one million copies (for singles), or two million (for albums).

4. Etymology: platina, "little silver" (because platinum was found as an apparent impurity with silver)

WikipediaRate this definition:0.0 / 0 votes

1. Platinum

   Platinum is a chemical element with the symbol Pt and atomic number 78. It is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. Its name originates from Spanish platina, a diminutive of plata "silver".Platinum is a member of the platinum group of elements and group 10 of the periodic table of elements. It has six naturally occurring isotopes. It is one of the rarer elements in Earth's crust, with an average abundance of approximately 5 μg/kg. It occurs in some nickel and copper ores along with some native deposits, mostly in South Africa, which accounts for ~80% of the world production. Because of its scarcity in Earth's crust, only a few hundred tonnes are produced annually, and given its important uses, it is highly valuable and is a major precious metal commodity.Platinum is one of the least reactive metals. It has remarkable resistance to corrosion, even at high temperatures, and is therefore considered a noble metal. Consequently, platinum is often found chemically uncombined as native platinum. Because it occurs naturally in the alluvial sands of various rivers, it was first used by pre-Columbian South American natives to produce artifacts. It was referenced in European writings as early as the 16th century, but it was not until Antonio de Ulloa published a report on a new metal of Colombian origin in 1748 that it began to be investigated by scientists. Platinum is used in catalytic converters, laboratory equipment, electrical contacts and electrodes, platinum resistance thermometers, dentistry equipment, and jewelry. Platinum is used in the glass industry to manipulate molten glass which does not "wet" platinum. As a heavy metal, it leads to health problems upon exposure to its salts; but due to its corrosion resistance, metallic platinum has not been linked to adverse health effects. Compounds containing platinum, such as cisplatin, oxaliplatin and carboplatin, are applied in chemotherapy against certain types of cancer.Pure platinum is currently less expensive than pure gold, having been so continuously since 2015, but has been twice as expensive or more, mostly prior to 2008. In early 2021, the value of platinum ranged from US$1,055 to US$1,320 per troy ounce.

ChatGPTRate this definition:0.0 / 0 votes

1. platinum

   Platinum is a precious, silver-white metallic element that is highly resistant to corrosion and extremely malleable and ductile. It falls under the category of transition metals in the periodic table and has the chemical symbol Pt. It is used in various industries such as jewelry, automotive, medical, and electronics due to its unique properties. Platinum is also used as a catalyst in some chemical reactions. It is considered one of the rarest and most valuable metals.

Webster DictionaryRate this definition:0.0 / 0 votes

1. Platinumnoun

   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

2. Etymology: [NL., fr. Sp. platina, from plata silver, LL. plata a thin plate of metal. See Plate, and cf. Platina.]

FreebaseRate this definition:1.0 / 1 vote

1. Platinum

   Platinum is a chemical element with the chemical symbol Pt and an atomic number of 78. Its name is derived from the Spanish term platina, which is literally translated into "little silver". It is a dense, malleable, ductile, precious, gray-white transition metal. Platinum has six naturally occurring isotopes. It is one of the rarest elements in the Earth's crust and has an average abundance of approximately 5 μg/kg. It is the least reactive metal. It occurs in some nickel and copper ores along with some native deposits, mostly in South Africa, which accounts for 80% of the world production. As a member of the platinum group of elements, as well as of the group 10 of the periodic table of elements, platinum is generally non-reactive. It exhibits a remarkable resistance to corrosion, even at high temperatures, and as such is considered a noble metal. As a result, platinum is often found chemically uncombined as native platinum. Because it occurs naturally in the alluvial sands of various rivers, it was first used by pre-Columbian South American natives to produce artifacts. It was referenced in European writings as early as 16th century, but it was not until Antonio de Ulloa published a report on a new metal of Colombian origin in 1748 that it became investigated by scientists.

Chambers 20th Century DictionaryRate this definition:5.0 / 1 vote

1. 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.]

U.S. National Library of MedicineRate this definition:0.0 / 0 votes

1. Platinum

   Platinum. A heavy, soft, whitish metal, resembling tin, atomic number 78, atomic weight 195.09, symbol Pt. (From Dorland, 28th ed) It is used in manufacturing equipment for laboratory and industrial use. It occurs as a black powder (platinum black) and as a spongy substance (spongy platinum) and may have been known in Pliny's time as "alutiae".

Editors ContributionRate this definition:0.0 / 0 votes

1. platinum

   A type of color on a color chart.

   Platinum silver is a silver white color, where as platinum hair dye is a white color on the color chart.

   
   

   Submitted by MaryC on July 30, 2016  

2. ---

   platinum

   Is an element and form of metal.

   Platinum occurs naturally in the sands of various rivers and has many purposes.

   
   

   Submitted by MaryC on November 20, 2015  

Suggested ResourcesRate this definition:0.0 / 0 votes

1. platinum

   The platinum symbol -- In this Symbols.com article you will learn about the meaning of the platinum symbol and its characteristic.

2. platinum

   Song lyrics by platinum -- Explore a large variety of song lyrics performed by platinum on the Lyrics.com website.

Matched Categories

1. • Noble Metal

How to pronounce platinum?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say platinum in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of platinum in Chaldean Numerology is: 5

2. Pythagorean Numerology

   The numerical value of platinum in Pythagorean Numerology is: 7

Examples of platinum in a Sentence

1. Erica Rannestad:

   While the falling platinum price has been a major contributor to higher platinum jewelry imports, it should also be noted that lower platinum jewelry retail prices, a stronger United States dollar, a falling platinum-gold price ratio, and higher disposable incomes per capita have pushed imports and demand higher.

2. Josh Marion:

   While his brother and many other male royals chose not to wear a ring, Harry is wearing a platinum ring with a textured, sophisticated finish, the fact that he chose to wear a wedding band is very modern, which goes against tradition within the royal family. His band is also platinum and not Welsh gold, which runs contrary to royal tradition as well.

3. Achim Moritz:

   There has been lots of optimization work concerning platinum in fuel cells, if you look at a diesel catalytic system, there is about the same amount of platinum content you need for a fuel cell.

4. 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.

5. Matthew Turner:

   The platinum market is just too small. China has $3.7 trillion of foreign exchange reserves. To keep 1 percent by value in platinum, at $1,000 an ounce, would need 37 million ounces of platinum, which is six years' mine supply, to get 0.1 percent, you'd only need to buy two-thirds of a year's mine supply, but why would you want to hold 0.1 percent of your reserves in platinum? What use would that be to anyone?

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