os·mi·rid·i·um ( z m -r d  -m)n. 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. |
osmiridium [ˌɒzmɪˈrɪdɪəm]
n
(Chemistry / 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
[from osm(ium) + iridium]
ThesaurusLegend: Synonyms Related Words Antonyms
| 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 |
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