Reference meaning
Rb
Last updated
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
Related source terms
Source and scope
This definition is reproduced from Princeton WordNet 3.0, sense 14652954-n, under the WordNet 3.0 License. It has not yet received VocabularyBase editorial review. Read the source and license details.