Definition of iridium in English:

iridium

Syllabification: i·rid·i·um
Pronunciation: /iˈridēəm
 
/

noun

  • The chemical element of atomic number 77, a hard, dense silvery-white metal. (Symbol: Ir)
    More example sentences
    • Jewellery made of platinum, iridium and palladium gleamed majestically, now and then emitting flashes of brilliant light from the studded diamonds.
    • The new electrochemical system is based on a magnesium anode, a seawater/catholyte electrolyte and an electrocatalyst of palladium and iridium catalyzed on carbon paper.
    • The earth's crust is depleted in iridium and other platinum group elements, while meteorites are enriched in them.

Origin

early 19th century: modern Latin, from Latin iris, irid- 'rainbow' (so named because it forms compounds of various colors).

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