iridium

listen to the pronunciation of iridium
English - Turkish
iridyum

İridyum en ender elementlerden biridir. - Iridium is one of the rarest elements.

(Tıp) Ir sembolü ile bilnen atom no: 77 ve atom ağırlığı: 192.2 olan kimyasal element
(isim) iridyum
(Nükleer Bilimler) (ir) iridyum
(Tıp) iridium

Related Terms

iridium anomaly
iridiyum anomalisi
English - English
A metallic chemical element (symbol Ir) with an atomic number of 77
Gold being too "soft" and susceptible to wear for continued writing, nibs need to be "tipped" with a more durable material Although other metals were also used, iridium has become the common term to refer to all tipping material Most Iridium for vintage pens was mined in Russia
{i} precious metallic element of the platinum group (Chemistry); modern satellite communications system that enables mobile telephone communications everywhere in the world (Cellular Communication)
A radioactive wire often used to deliver the boost to the operative site in breast conserving techniques
A very rare, precious, silvery white, hard, brittle metal that resists most acids, it is one of the densest substances known on Earth. It probably does not occur uncombined in nature but is found in natural alloys with other noble (i.e., chemically inactive or inert) metals. The pure metal is too hard to work with to have any significant uses; alloys with platinum are used in jewelry, pen points, surgical pins and pivots, electrical contacts and sparking points, and extrusion dies. The international prototype kilogram, the primary standard (see weights and measures) for weight, is made of an alloy comprising 90% platinum and 10% iridium. The discovery of abnormally high amounts of iridium in rocks dating to the boundary between the Cretaceous and Tertiary periods led to a much-debated hypothesis that an iridium-containing asteroid striking Earth led to a catastrophic chain of events including the extinction of dinosaurs and many other forms of life
Iridium is an element that occurs in the Earths crust in only tiny proportions, but is much more common in chondrite meteorites
A world-wide satellite telephone system that uses low-orbit satellites to provide universal global communications coverage Iridium's original high cost and poor service almost led to the company's collapse in 1999 A reorganized Iridium now offers very competitive rates and smaller phones Other satellite phone services include Globalstar and ICO/Ellipse (See our links page )
a hard and very heavy metal that is combined with platinum to make jewellery and is used in scientific instruments. It is a chemical element : symbol Ir (iris ( IRIS); because when it becomes liquid in a particular acid, it shows the colors of the rainbow). Metallic chemical element, one of the transition elements, chemical symbol Ir, atomic number
A rare metallic element, of the same group as platinum, which it much resembles, being silver-white, but harder, and brittle, and indifferent to most corrosive agents
A metal and member of the platinum family, it is often alloyed with platinum to improve workability, thus you will find pieces marked something like "90% Plat 10% Irrid" to indicate that the alloy is 90 % platinum and 10% iridium
a heavy brittle metallic element of the platinum group; used in alloys; occurs in natural alloys with platinum or osmium
Symbol Ir
A global mobile phone system of 66 satellites that offer global communications
Chemical symbol Ir A yellowish mineral with the most corrosion resistance of any metal known (See PLATINUM GROUP METALS)
Atomic weight 192
With the exception of osmium, it is the heaviest substance known, its specific gravity being 22

Related Terms

eka-iridium
An alternative name for meitnerium
iridium.
iridio-
Turkish - English
(Tıp) iridium
iridium

    Hyphenation

    i·rid·i·um

    Turkish pronunciation

    îrîdiım

    Pronunciation

    /əˈrədēəm/ /ɪˈrɪdiːəm/

    Etymology

    () Latin iris, rainbow (because of the bright colour of many of iridium's salts)
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