electron

noun
elec·​tron | \ i-ˈlek-ˌträn How to pronounce electron (audio) \

Definition of electron

: 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 Measurements show that the minuscule electron weighs 0.5 megaelectron volts (MeV), while its second- and third-generation counterparts, called the muon and the tau particle, tip the scales at 105 and 1,776 MeV, respectively. Quanta Magazine, "Why Do Matter Particles Come in Threes? A Physics Titan Weighs In," 30 Mar. 2020 This is typically slow because the electron has to hop from site to site in a kind of random, drift-like fashion. Chris Lee, Ars Technica, "OLED-power link jumps from useless 50Mb/s to useful 1Gb/s," 13 Mar. 2020 One is the speed with which electrons transit the organic molecule that comprises the LED. Chris Lee, Ars Technica, "OLED-power link jumps from useless 50Mb/s to useful 1Gb/s," 13 Mar. 2020 Building directly on Dyson’s work, physicists have been able to make theoretical predictions about the behavior of particles like electrons with unprecedented accuracy. David Kaiser, The New Yorker, "Freeman Dyson’s Letters Offer Another Glimpse of Genius," 5 Mar. 2020 Those radio emissions were created by electrons moving at the speed of light in the jets moving away from the black hole. 'Like discovering a dinosaur' The explosion has since ceased because current radio data doesn't reveal any jet activity. Ashley Strickland, CNN, "Biggest explosion in the universe spotted by astronomers," 27 Feb. 2020 The focus on managing energy consumption seems counterintuitive for a company that earns much of its revenue by selling electrons. Katherine Blunt, WSJ, "How a Utility’s Counterintuitive Strategy Might Fuel a Greener Future," 8 Feb. 2020 Auroras occur when electrons ejected from the sun bombard Earth’s magnetic field and interact with gases in the planet’s atmosphere to create the stunning green, purple, red and blue lights of the northern and southern lights. NBC News, "A new aurora? Researchers say 'the dunes' aren't like the usual lights in the sky," 29 Jan. 2020 But their talk of electrons was interrupted near Oklahoma City, where flooding had closed parts of Route 66, forcing them off the road in a small town. David Kaiser, The New Yorker, "Freeman Dyson’s Letters Offer Another Glimpse of Genius," 5 Mar. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'electron.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of electron

1891, in the meaning defined above

History and Etymology for electron

electr- + -on entry 2

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Time Traveler for electron

Time Traveler

The first known use of electron was in 1891

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Statistics for electron

Last Updated

7 Apr 2020

Cite this Entry

“Electron.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/electron. Accessed 10 Apr. 2020.

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More Definitions for electron

electron

noun
How to pronounce electron (audio)

English Language Learners Definition of electron

physics : a very small particle of matter that has a negative charge of electricity and that travels around the nucleus of an atom

electron

noun
elec·​tron | \ i-ˈlek-ˌträn How to pronounce electron (audio) \

Kids Definition of electron

: a very small particle that has a negative charge of electricity and travels around the nucleus of an atom

electron

noun
elec·​tron | \ i-ˈlek-ˌträn How to pronounce electron (audio) \

Medical Definition of electron

: 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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More from Merriam-Webster on electron

Rhyming Dictionary: Words that rhyme with electron

Spanish Central: Translation of 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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