ruthenium.
A metallic chemical element (symbol Ru) with an atomic number of 44.
Meaning & usage
A metallic chemical element (symbol Ru) with an atomic number of 44.
Their latest catalyst includes some ruthenium.
An atom of this element.
This reaction substitutes a ruthenium for an osmium.
Where this word comes from
Ruthenia + -ium. Named by Baltic German scientist Karl Ernst Claus in 1844 in honour of Russia (using the Latin name Ruthenia).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.