Advertisement
Advertisement
platinum
[ plat-n-uhm, plat-nuhm ]
noun
- Chemistry. a heavy, grayish-white, highly malleable and ductile metallic element, resistant to most chemicals, practically unoxidizable except in the presence of bases, and fusible only at extremely high temperatures: used for making chemical and scientific apparatus, as a catalyst in the oxidation of ammonia to nitric acid, and in jewelry. : Pt; : 195.09; : 78; : 21.5 at 20°C.
- a light, metallic gray with very slight bluish tinge when compared with silver.
adjective
- made of platinum.
- (of an audio recording) having sold a minimum of one million copies.
platinum
/ ˈæɪə /
noun
- a ductile malleable silvery-white metallic element, very resistant to heat and chemicals. It occurs free and in association with other platinum metals, esp in osmiridium: used in jewellery, laboratory apparatus, electrical contacts, dentistry, electroplating, and as a catalyst. Symbol: Pt; atomic no: 78; atomic wt: 195.08; valency: 1–4; relative density: 21.45; melting pt: 1769°C; boiling pt: 3827±100°C
- a medium to light grey colour
- ( as adjective )
a platinum carpet
platinum
- A soft, ductile, malleable, silver-white metallic element that usually occurs with osmium, iridium, palladium, or nickel. It has a high melting point and does not corrode in air. Platinum is used as a catalyst and in making jewelry, electrical contacts, and dental crowns. Atomic number 78; atomic weight 195.08; melting point 1,772°C; boiling point 3,827°C; specific gravity 21.45; valence 2, 3, 4.
- See Periodic Table
Word History and Origins
Word History and Origins
Origin of platinum1
Example Sentences
The four have now marked the rare double platinum anniversary together, this time with their children, grandchildren and great-grandchildren for company.
Blink-182 made its famed name on a brand of boyish, humor-laden punk songs that defied the grunge trend of the early 1990s to top Billboard charts and achieve platinum sales.
Although it received some of the best reviews of his career, it was his first album not to go platinum in the UK.
"This risked giving consumers the misleading impression that platinum tickets were better," it said in an update to its investigation into Ticketmaster.
New York Times fashion director Vanessa Friedman declared that Donatella "wore her struggles - with personal tragedy, self-doubt, finding her creative feet, and drugs - with as much aplomb as her long platinum hair".
Advertisement
Advertisement
Advertisement
Advertisement
Browse