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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
Essentially, the tufts of tiny hairs on gecko feet get so close to the contours in walls and ceilings that electrons from the gecko hair molecules and electrons from the wall molecules interact with each other and create an electromagnetic attraction.
—
Jennifer Ouellette, Ars Technica, 4 Feb. 2025
The radio signal arises because of a quantum transition in neutral hydrogen’s electron.
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The Editors, JSTOR Daily, 30 Jan. 2025
The variation between fast-pulsating and flickering auroras may lie in the different ways electrons accelerate.
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Jack Knudson, Discover Magazine, 27 Jan. 2025
What Cui and Wang found was that the electrons in the plume behave differently depending upon their temperature and their velocity.
—
Keith Cooper, Space.com, 25 Jan. 2025
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Word History
Etymology
electr- + -on entry 2
First Known Use
1891, in the meaning defined above
Phrases Containing electron
Dictionary Entries Near electron
Cite this Entry
“Electron.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/electron. Accessed 12 Feb. 2025.
Kids 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
More from Merriam-Webster on electron
Nglish: Translation of electron for Spanish Speakers
Britannica English: Translation of electron for Arabic Speakers
Britannica.com: Encyclopedia article about electron
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