iridium - WordReference.com Dictionary of English

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iridium

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Concise Oxford English Dictionary © 2008 Oxford University Press:
iridium /ɪˈrɪdɪəm, ʌɪ-/

▶noun the chemical element of atomic number 77, a hard, dense silvery-white metal. (Symbol: Ir)

– origin C19: mod. L., from L. iris, irid- ‘rainbow’ (so named because it forms compounds of various colours).

'iridium' also found in these Oxford entries:

Ir - platinum metals

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