Definition of ruthenium
: a rare hard silvery-white metallic element occurring in platinum ores and used especially as a catalyst and to harden alloys — see element table
Recent Examples of ruthenium from the Web
Combining a small amount of hydrogen brought from Earth with martian atmospheric carbon dioxide in the presence of a nickel or ruthenium catalyst would yield methane and water.
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Origin and Etymology of ruthenium
New Latin, from Medieval Latin Ruthenia Ruthenia
First Known Use: 1829
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