- 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. Source: opted
- 2. n. 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 Source: wordnet
- 3. 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. Source: webster
- 4. A rare metallic element. It occurs quite widely, but in smallquantities, and always combined. It is isolated as a soft yellowishwhite metal, analogous to potassium in most of its properties. SymbolRb. Atomic weight, 85.2. Source: adambom
- 5. n:100 n. 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 Source: ecdict
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