iridosmine

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ir·i·dos·mine

 (ĭr′ĭ-dŏz′mēn)

iridosmine

(ˌɪrɪˈdɒsmaɪn; ˌaɪrɪ-) or

iridosmium

n
(Elements & Compounds) other names for osmiridium
[C19: from irido- + osm(ium) + ine-2]

ir•i•dos•mine

(ˌɪr ɪˈdɒz mɪn, -ˈdɒs-)

n.
a native alloy of iridium and osmium, usu. containing some rhodium, ruthenium, platinum, etc., used esp. for the points of gold pens.
[1820–30]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.iridosmine - 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