ruthenium, n.
(ruthenia)
(ruthenia)
a rare polyvalent metallic element of the platinum group; it is found associated with platinum
<noun.substance>
Ru atomic number 44 ruthenium
semantic pointers
hypernym
Word
a rare polyvalent metallic element of the platinum group; it is found associated with platinum
<noun.substance>
Ru atomic number 44 ruthenium