Rb

symb. Chem. the element rubidium.

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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

• Syn: ↑rubidium, ↑atomic number 37

• Hypernyms: ↑metallic element, ↑metal

• Substance Holonyms: ↑carnallite, ↑lepidolite, ↑pollucite

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abbreviation

ruble

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Symbol, Chem.

rubidium.

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abbrev

Formerly, Rifle Brigade

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Rb (no period),

rubidium (chemical element).

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symbol the chemical element rubidium