Definition of platiniridium in English:

platiniridium

noun

Mineralogy Metallurgy
  • An alloy of platinum and iridium, especially when occurring naturally, typically as white rounded or angular grains.

Origin

Mid 19th century; earliest use found in James Dana (1813–1895), geologist, zoologist, and teacher. From platin- + iridium.

Pronunciation

platiniridium

/ˌplatɪnɪˈrɪdɪəm/