SINCE 1828
osmium
noun
os·mi·um
| \ ˈäz-mē-əm
\
\
Definition of osmium
: a blue-gray or blue-black hard brittle very heavy polyvalent metallic element with a high melting point that is used especially as a catalyst and in hard alloys — see Chemical Elements Table
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osmium
noun
os·mi·um
| \ ˈäz-mē-əm
\
\
Medical Definition of osmium
: a hard brittle blue-gray or blue-black polyvalent metallic element of the platinum group with a high melting point that is the heaviest metal known and that is used especially as a catalyst and in hard alloys
—symbol Os
— see Chemical Elements Table
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