rubidium
noun
ru·bid·i·um
rü-ˈbi-dē-əm 
: 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
Examples of rubidium in a Sentence
Recent Examples on the Web
The group measured the ratios of light to heavy isotopes of both potassium and rubidium.
—
Jonathan O’Callaghan, Discover Magazine, 21 Oct. 2024
Their experiments involved shooting photons through a cloud of ultracold rubidium atoms and measuring the resulting degree of atomic excitation.
—Manon Bischoff, Scientific American, 30 Sep. 2024
While studying the samples, the researchers were primarily looking for two elements both known to occur on the moon: potassium and rubidium.
—Eric Lagatta, USA TODAY, 12 Aug. 2024
So the researchers measured the isotope ratios for both potassium and rubidium.
—Will Sullivan, Smithsonian Magazine, 7 Aug. 2024
See all Example Sentences for rubidium 
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Jonathan O’Callaghan, Discover Magazine, 21 Oct. 2024
Their experiments involved shooting photons through a cloud of ultracold rubidium atoms and measuring the resulting degree of atomic excitation.
—Manon Bischoff, Scientific American, 30 Sep. 2024
While studying the samples, the researchers were primarily looking for two elements both known to occur on the moon: potassium and rubidium.
—Eric Lagatta, USA TODAY, 12 Aug. 2024
So the researchers measured the isotope ratios for both potassium and rubidium.
—Will Sullivan, Smithsonian Magazine, 7 Aug. 2024
See all Example Sentences for rubidium
Dictionary Entries Near rubidium
Cite this Entry
“Rubidium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rubidium. Accessed 30 Nov. 2024.
Copy CitationKids Definition
rubidium
noun
ru·bid·i·um
rü-ˈbid-ē-əm
: a soft silvery metallic element that reacts violently with water see element
Medical Definition
rubidium
noun
ru·bid·i·um
rü-ˈbid-ē-əm
: a soft silvery metallic element that decomposes water with violence and bursts into flame spontaneously in air
—symbol Rb
see Chemical Elements Table
Love words? Need even more definitions?
Merriam-Webster unabridged
Share