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A mineral that is a natural alloy of osmium and iridium with small inclusions of platinum, rhodium, and other metals, used in needles and wearing points. Also called iridosmine.
(Elements & Compounds) 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: iridosmine
[C19: from osm(ium) + iridium]
ir•i•dos•mine(ˌɪr ɪˈdɒz mɪn, -ˈdɒs-)
a native alloy of iridium and osmium, usu. containing some rhodium, ruthenium, platinum, etc., used esp. for the points of gold pens.
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|Noun||1.||osmiridium - a hard and corrosion resistant mineral that is a natural alloy of osmium and iridium (usually containing small amounts of rhodium and platinum); used in needles and pen nibs etc.|
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition