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· Latin
rubidus
2 English words descend from Latin
rubidus
, most common first.
rubidium
The chemical element (symbol Rb) with an atomic number of 37. It is a soft, highly reactive alkali metal.
rubidus
A butterfly, hybrid between the viceroy (Limenitis archippus) and the red-spotted purple (Limenitis arthemis astyanax).