1. iridium

noun. ['ˌɪˈrɪdiːəm'] a heavy brittle metallic element of the platinum group; used in alloys; occurs in natural alloys with platinum or osmium.


  • metallic element
  • Ir
  • metal


  • ἶρις (Ancient Greek (to 1453))

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Rhymes with Iridium

  • cryptosporidium
  • chriptosporidium
  • presidium
  • nephridium
  • idiom

Sentences with iridium

1. Noun, singular or mass
Spark plugs made with iridium electrodes have a tolerance to heat above that of platinum types.

2. Adjective
Many fakes have the words "iridium tip" and "made in Germany" stamped on them.