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iridium
[ ih-rid-ee-uhm, ahy-rid- ]
noun
- a precious metallic element resembling platinum: used in platinum alloys and for the points of gold pens. : Ir; : 192.2; : 77; : 22.4 at 20°C.
iridium
/ ɪˈrɪd-; aɪˈrɪdɪəm /
noun
- a very hard inert yellowish-white transition element that is the most corrosion-resistant metal known. It occurs in platinum ores and is used as an alloy with platinum. Symbol: Ir; atomic no: 77; atomic wt: 192.22; valency: 3 or 4; relative density: 22.42; melting pt: 2447°C; boiling pt: 4428°C
iridium
/ ĭ-rĭd′ē-əm /
- A rare, whitish-yellow element that is the most corrosion-resistant metal known. It is very dense, hard, and brittle, and is is used to make hard alloys of platinum for jewelry, pen points, and electrical contacts. Atomic number 77; atomic weight 192.2; melting point 2,410°C; boiling point 4,130°C; specific gravity 22.42 (at 17°C); valence 3, 4.
- See Periodic Table
Word History and Origins
Word History and Origins
Origin of iridium1
A Closer Look
Example Sentences
They store all the data they collect, and once they break through the waves, the GPS signal will activate, and it will be able to “phone home” through an iridium satellite network.
That firm is Iridium, the satellite telecom valued at more than $5 billion.
Globally distributed iridium layer preserved within the Chicxulub impact structure.
Presumably the iridium level of a cometary object wouldn’t be that far off, but it remains to be seen.
Today Iridium is SpaceX’s largest commercial customer, having launched 75 of its satellites on eight SpaceX rockets.
Two years later, a Russian satellite crashed into a communications satellite owned by the company Iridium.
Les Paul was a Monday night regular at the New York City club Iridium for the final years of his life.
Note the quality of the following statements: Iridium has a power, purity and simplicity that pleases me; now I can make progress.
It has been observed that when Medicinal Iridium acts as a laxative, it will regulate the same.
It should not be difficult for the physician to fix the status of iridium under this sort of exploitation.
The native alloy of osmium and iridium does not alloy with gold, however, but falls to the bottom of the molten metal.
The gold may contain an alloy of osmium and iridium; if so, it should be weighed and treated with aqua regia.
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