electron
noun
elec·tron
i-ˈlek-ˌträn 
: an elementary particle consisting of a charge of negative electricity equal to about 1.602 × 10−19 coulomb and having a mass when at rest of about 9.109 × 10−31 kilogram or about ¹/₁₈₃₆ that of a proton
Examples of electron in a Sentence
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This doesn’t just happen for balls rolling down hills, but for rain that pools into puddles, ponds, and lakes, for molecules that fold into a particular configuration, and even for electrons that cascade down into a stable or quasi-stable energy state.
—
Ethan Siegel, Big Think, 8 Oct. 2025
In 2023, the prize went to a trio of European scientists who used lasers to understand the rapid movement of electrons, which were previously thought impossible to follow.
—Katie Hunt, CNN Money, 7 Oct. 2025
With the help of advanced transmission electron microscopy, the team revealed the gold was not forming continuous films, as previously thought, but existed as discrete nanoparticles.
—Georgina Jedikovska, Interesting Engineering, 7 Oct. 2025
In this frigid state, electrons become complaisant enough to forgo their usual resistance and flow frictionlessly.
—Dan Garisto, Scientific American, 7 Oct. 2025
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Ethan Siegel, Big Think, 8 Oct. 2025
In 2023, the prize went to a trio of European scientists who used lasers to understand the rapid movement of electrons, which were previously thought impossible to follow.
—Katie Hunt, CNN Money, 7 Oct. 2025
With the help of advanced transmission electron microscopy, the team revealed the gold was not forming continuous films, as previously thought, but existed as discrete nanoparticles.
—Georgina Jedikovska, Interesting Engineering, 7 Oct. 2025
In this frigid state, electrons become complaisant enough to forgo their usual resistance and flow frictionlessly.
—Dan Garisto, Scientific American, 7 Oct. 2025
See All Example Sentences for electron
Cite this Entry
“Electron.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/electron. Accessed 10 Oct. 2025.
Copy CitationKids Definition
electron
noun
elec·tron
i-ˈlek-ˌträn
: an elementary particle that has a negative charge of electricity and travels around the nucleus of an atom
Medical Definition
electron
noun
elec·tron
i-ˈlek-ˌträn
: an elementary particle consisting of a charge of negative electricity equal to about 1.602 × 10−19 coulomb and having a mass when at rest of about 9.109534 × 10−28 gram or about ¹/₁₈₃₆ that of a proton
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