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
Recent Examples on the Web
Its apparently smooth screen quickly dissolves into a jiggling lattice of molecules, which in turn resolve into clouds of electrons buzzing around atomic nuclei.
—
Quanta Magazine, 11 Mar. 2026
When a radio wave encounters an electron in interstellar space, lower radio frequencies interact more strongly than higher frequencies, causing the lower frequencies to be delayed and arrive at their destination later than higher frequencies.
—Keith Cooper, Space.com, 8 Mar. 2026
The researchers used carefully tuned laser pulses and a technique known as polarization-selective p-shell excitation to guide electrons into this dark state.
—Rupendra Brahambhatt, Interesting Engineering, 8 Mar. 2026
And with electrons flying at full bore, the furious single-seater promises to keep igniting the record books into embers and ashes.
—New Atlas, 6 Mar. 2026
See All Example Sentences for electron
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.
Quanta Magazine, 11 Mar. 2026
When a radio wave encounters an electron in interstellar space, lower radio frequencies interact more strongly than higher frequencies, causing the lower frequencies to be delayed and arrive at their destination later than higher frequencies.
—Keith Cooper, Space.com, 8 Mar. 2026
The researchers used carefully tuned laser pulses and a technique known as polarization-selective p-shell excitation to guide electrons into this dark state.
—Rupendra Brahambhatt, Interesting Engineering, 8 Mar. 2026
And with electrons flying at full bore, the furious single-seater promises to keep igniting the record books into embers and ashes.
—New Atlas, 6 Mar. 2026
See All Example Sentences for electron
Cite this Entry
“Electron.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/electron. Accessed 18 Mar. 2026.
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
Love words? Need even more definitions?
Merriam-Webster unabridged
