Lexic.us

Definition of Rubidium

1. Noun. A soft silvery metallic element of the alkali metal group; burns in air and reacts violently in water; occurs in carnallite and lepidolite and pollucite.

Definition of Rubidium

1. n. 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.

Definition of Rubidium

1. Noun. A metallic chemical element (''symbol'' Rb) with an atomic number of 37. ¹

¹ Source: wiktionary.com

Definition of Rubidium

1. a metallic element [n -S] : RUBIDIC [adj]

Medical Definition of Rubidium

1. 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. Origin: 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. Abbreviation: Rb (17 Mar 1998)

Lexicographical Neighbors of Rubidium

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