Ru*bid"i*um (?), n. [NL., fr. L.
rubidus red, fr. rubere to be red. So called from two
dark red spectroscopic lines by means of which it was
discovered in the lepidolite from Rozena, Moravia. See
Rubicund.] (Chem.) A rare metallic element. It
occurs quite widely, but in small quantities, and always combined. It
is isolated as a soft yellowish white metal, analogous to potassium in
most of its properties. Symbol Rb. Atomic weight, 85.2.
Ru*bid"i*um (?), n. [NL., fr. L.
rubidus red, fr. rubere to be red. So called from two
dark red spectroscopic lines by means of which it was
discovered in the lepidolite from Rozena, Moravia. See
Rubicund.] (Chem.) A rare metallic element. It
occurs quite widely, but in small quantities, and always combined. It
is isolated as a soft yellowish white metal, analogous to potassium in
most of its properties. Symbol Rb. Atomic weight, 85.2.
