platiniridium

[ plat-n-i-rid-ee-uh m, -ahy-rid- ]
/ ˌplæt n ɪˈrɪd i əm, -aɪˈrɪd- /

noun

a natural alloy composed chiefly of platinum and iridium.

Origin of platiniridium

First recorded in 1865–70; platin(um) + iridium

British Dictionary definitions for platiniridium

platiniridium
/ (ˌplætɪnɪˈrɪdɪəm) /

noun

any alloy of platinum and iridium: used in jewellery, electrical contacts, and hypodermic needles