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Definitions from WordNet
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Definitions from the Web
Iridium
Definition: Iridium is a chemical element with the symbol Ir and atomic number 77. It is a dense, silvery-white metal that is extremely corrosion-resistant and primarily used in industrial and scientific applications.
Senses:
- Chemistry: A metallic chemical element found in the platinum group, symbol Ir, and atomic number 77. It is known for its high melting point and resistance to corrosion.
- Geology: A naturally occurring mineral consisting primarily of iridium along with other platinum-group metals. It is commonly found in meteorites and plays a crucial role in providing evidence of extraterrestrial impacts.
Sample sentences:
- The lab used iridium crucibles for high-temperature experiments.
- The jewelry industry appreciates iridium's lustrous and durable characteristics, making it an excellent choice for premium products.
- Scientists study iridium anomalies in sediment layers as evidence of ancient asteroid impacts.
- The iridium-rich layer in the geological record marks the boundary between the Cretaceous and Paleogene periods.
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