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Webster 1913 Edition

Iridosmium

{

Irˊi-dos′mine

,

Irˊi-dos′mi-um

, }

Noun.

[

Irid

ium +

osmium

.]

(Min.)

The native compound of iridium and osmium. It is found in flattened metallic grains of extreme hardness, and is often used for pointing gold pens.