Thesaurus: ruthenium

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Definitions

1. n. A rare element of the light platinum group, found associated with platinum ores, and isolated as a hard, brittle steel-gray metal which is very infusible. Symbol Ru. Atomic weight 103.5. Specific gravity 12.26. See Platinum metals, under Platinum.
2. n. a rare polyvalent metallic element of the platinum group; it is found associated with platinum
3. A rare element of the light platinum group, found associated with platinum ores, and isolated as a hard, brittle steel-gray metal which is very infusible. Symbol Ru. Atomic weight 103.5. Specific gravity 12.26. See Platinum metals, under Platinum.
4. A rare element of the light platinum group, found associatedwith platinum ores, and isolated as a hard, brittle steel-gray metalwhich is very infusible. Symbol Ru. Atomic weight 103.5. Specificgravity 12.26. See Platinum metals, under Platinum.
5. n. a rare polyvalent metallic element of the platinum group; it is found associated with platinum