Definition of rubidium
:a soft silvery metallic element of the alkali metal group that reacts violently with water and bursts into flame spontaneously in air — see Chemical Elements Table
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Recent Examples of rubidium from the Web
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Image: Individual rubidium atoms form into a single super-atom in a Bose-Einstein condensate.
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Origin and Etymology of rubidium
New Latin, from Latin rubidus red, from rubēre
Medical Dictionary
rubidium
play
noun
ru·bid·i·um
\
rü-ˈbid-ē-əm
\
medical Definition of rubidium
:a soft silvery metallic element that decomposes water with violence and bursts into flame spontaneously in air
—symbol Rb
— see Chemical Elements Table
Learn More about rubidium
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See words that rhyme with rubidium Britannica.com: Encyclopedia article about rubidium
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