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
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
First, potassium and rubidium concentrations in the moon’s atmosphere increased during meteor showers.
—Paul Smaglik, Discover Magazine, 2 Aug. 2024
In 2004, a team at the University of Connecticut demonstrated a Rydberg blockade between rubidium atoms, trapped and cooled to just 100 microkelvins above absolute zero.
—Philip Ball, Quanta Magazine, 25 Mar. 2024
See all Example Sentences for 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
First, potassium and rubidium concentrations in the moon’s atmosphere increased during meteor showers.
—Paul Smaglik, Discover Magazine, 2 Aug. 2024
In 2004, a team at the University of Connecticut demonstrated a Rydberg blockade between rubidium atoms, trapped and cooled to just 100 microkelvins above absolute zero.
—Philip Ball, Quanta Magazine, 25 Mar. 2024
See all Example Sentences for rubidium
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'rubidium.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near rubidium
Cite this Entry
“Rubidium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rubidium. Accessed 17 Sep. 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