IRIDIUM


Meaning of IRIDIUM in English

[ ɪ'rɪdɪəm , 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).

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.