D defs.my
Entry 1 sense Webster, 1913

Ruthenious

· Ru·the·ni·ous · IPA
01 a. Pertaining to, or containing, ruthenium; specifically, designating those compounds in which it has a lower valence as contrasted with ruth…
  1. 1.
    Pertaining to, or containing, ruthenium; specifically, designating those compounds in which it has a lower valence as contrasted with ruthenic compounds.(Chem.)