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noun
a native alloy of iridium and osmium, usually containing some rhodium, ruthenium, platinum, etc., used especially for the points of gold pens.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Iridosmine
is always a great word to know.
So is flibbertigibbet. Does it mean:
| a chattering or flighty, light-headed person. |
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
Collins
World English Dictionary
| iridosmine or iridosmium (ˌɪrɪˈdɒsmaɪn, ˌaɪrɪ-) | |
| —n | |
| other names for osmiridium | |
| [C19: from | |
| iridosmium or iridosmium | |
| —n | |
| [C19: from | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Encyclopedia Britannica
Encyclopedia
iridosmine
mineral consisting of an alloy of iridium and a smaller proportion of osmium. It occurs in gold-bearing conglomerates, as at the Witwatersrand in South Africa, and in gold sands, as in California and Oregon, U.S. Because of their hardness and resistance to corrosion, both natural and synthetic iridosmine are used for tips of pen nibs, surgical needles, and sparking points in engines. Similar alloys composed of more osmium than iridium are called siserskite. Both iridosmine and siserskite crystallize in the hexagonal system. For detailed properties, see native element (table)
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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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