Definition: Meaning of, rubidium in English to English dictionary.
Pronunciation:/ rʊˈbɪdɪəm /
noun
synonym
antonym
Word Forms:
Singular
Plural
rubidium
rubidiums
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
geological dating based on the proportions of radioactive rubidium into its decay product strontium; radioactive rubidium has a half-life of 47,000,000,000 years