Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun ru

1 sense of ru

Sense 1
ruthenium, Ru, atomic number 44 -- (a rare polyvalent metallic element of the platinum group; it is found associated with platinum)
       => metallic element, metal -- (any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.)