platiniridium

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

noun

a natural alloy composed chiefly of platinum and iridium.

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Origin of platiniridium

First recorded in 1865–70; platin(um) + iridium
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for platiniridium

platiniridium
/ (ˌplætɪnɪˈrɪdɪəm) /

noun

any alloy of platinum and iridium: used in jewellery, electrical contacts, and hypodermic needles
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012