Definition of ruthenium in English:


Line breaks: ru|the¦nium
Pronunciation: /rʊˈθiːnɪəm


[mass noun]
The chemical element of atomic number 44, a hard silvery-white metal of the transition series. (Symbol: Ru)
More example sentences
  • To this group belong the important steel alloying elements nickel and manganese, as well as cobalt and the inert metals ruthenium, rhodium, palladium, osmium, iridium and platinum.
  • It is also classified with a group of similar metals, including ruthenium, rhodium, palladium, osmium, and iridium, with similar properties.
  • That porous layer, which contains stabilized zirconia and small amounts of the metals ruthenium and cerium, chemically and cleanly converts the fuel to hydrogen.


mid 19th century: modern Latin, from medieval Latin Ruthenia (see Ruthenia), so named because it was discovered in ores from the Urals.

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