Bible Dictionaries
Ruthenium
Webster's Dictionary
(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.
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Bibliography Information
Webster, Noah. Entry for 'Ruthenium'. Noah Webster's American Dictionary. https://www.studylight.org/dictionaries/eng/web/r/ruthenium.html. 1828.