单词 | osmiridium |
释义 | Word Frequency osmiridium(ˌɒzmɪˈrɪdɪəm) noun a very hard corrosion-resistant white or grey natural alloy of osmium and iridium in variable proportions, often containing smaller amounts of platinum, ruthenium, and rhodium: used esp in pen nibs Also: iridosmineWord origin C19: from osm(ium) + iridium |
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