Iridium

/ɪˈrɪdiəm/

Meaning & Definition

noun

A dense, silvery-white metallic element that is one of the rarest elements found in nature, often used in high-temperature applications and in the manufacture of electrical contacts due to its high resistance to corrosion.

Iridium is often used in spark plugs for its durability and resistance to high temperatures.

Iridium is a member of the platinum group of metals and is denoted by the symbol Ir and atomic number 77.

The iridium layer found in the geological record is associated with the extinction of the dinosaurs.

Iridium alloys are used in the production of jewelry, including rings and bracelets, for their hardness and resistance to tarnishing.

The jeweler recommended an iridium alloy for the wedding bands because of its lasting shine.

Iridium is utilized in the manufacturing of various instruments due to its high density and resistance to oxidation.

Instruments used in deep-sea mining often incorporate iridium due to its strength and resistance to harsh conditions.

Etymology

The name iridium is derived from the Latin word 'iris', meaning rainbow, because of the various colors of its salts.

Common Phrases and Expressions

iridium plating

A process of covering an object with a thin layer of iridium for durability.

iridium satellite

A satellite network that provides voice and data communication across the globe.

Related Words

platinum

A dense, malleable metal that is often used in jewelry.

palladium

A rare, silvery-white metal used in catalytic converters.

Slang Meanings

A high-value commodity.

Investing in iridium is hot right now; it's like the gold of the future.