单词 | iridium |
释义 | iridium From Longman Dictionary of Contemporary English Elementsiridiumi‧rid‧i‧um /ɪˈrɪdiəm/ noun [uncountable]HCEMHa hard and very heavy metal that is combined with platinum to make jewellery and is used in scientific instruments. It is a chemical element: symbol IrExamples from the Corpusiridium• Like Green's compound, this iridium compound contains two hydrogen atoms that can be eliminated by light.Origin iridium (1800-1900) Latin iris ( → IRIS); because when it becomes liquid in a particular acid, it shows the colors of the rainbow |
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