(mineralogy) A hexagonal-dihexagonal dipyramidal white mineral containing iridium, osmium, and ruthenium.

(chemistry) Pertaining to, or containing, ruthenium; designating those compounds in which it has a lower valence as contrasted with ruthenic compounds.

A native or inhabitant of Ruthenia; a Ukrainian, a Belarusian, usually in a historical context.

Any of various languages historically spoken in Ruthenia; West Russian, also known as Old Ukrainian, Old Belarusian and Rusian, any Old East Slavic descendant, which is different from Russian, Great Russian or "East Russian"

Of or related to Ruthenia.

plural of Ruthenian

(organic chemistry) An organoruthenium compound consisting of a ruthenium ion sandwiched in between two cyclopentadienyl rings.

plural of ruthenocene

An inorganic dye used in histology to stain aldehyde-fixed mucopolysaccharides

plural of ruthenium