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 Thin-section electron micrographs of the novel coronavirus show part of an infected cell, grown in a culture, with virus particles being released from the cell’s surface. Jason Gale, Bloomberg.com, "Here Are the First Images of How Coronavirus Replicates in Cells," 10 May 2020 But this only happens for a very short burst before these electrons are used up. John Timmer, Ars Technica, "Researchers engineer photosynthetic bacteria to produce hydrogen," 7 May 2020 Its efficiency for converting the energy in electrons to chemical bonds in NH3 is 40%, the highest ever achieved with an electrolyzer. Robert F. Service, Science | AAAS, "Making commodity chemicals requires fossil fuels. New devices could do it with renewables," 4 May 2020 In Sport and Sport Plus settings, both fossil fuel and electrons are all on call to provide maximum acceleration and 670 horsepower. Elana Scherr, Car and Driver, "2020 Porsche Cayenne Turbo S E-Hybrid Coupe: Raises Questions, Raises Hell," 1 May 2020 Gas that hot pulls its own atoms apart, creating a sea of positive ions and negative electrons. Quanta Magazine, "Why Are Black Holes So Bright?," 22 Apr. 2020 Suddenly, the idea of a computer made by monitoring individual electrons one at a time doesn’t seem so far out. Caroline Delbert, Popular Mechanics, "Quantum Steampunk Is a Real, Retrofuturistic Field of Physics," 21 Apr. 2020 There are other, creepier incidents, including one involving an electron-multiplying camera. Bill Goodykoontz, azcentral, "'Ghost Hunters' season premiere visits this Arizona mining town. Here's what they found," 8 Apr. 2020 The microscope’s electron beam has a shorter wavelength than visible light and can capture smaller objects, but without color. Martin Oeggerli, National Geographic, "How trillions of microbes affect every stage of our life—from birth to old age," 17 Dec. 2019

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

19 May 2020

Cite this Entry

“Electron.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/electron. Accessed 4 Jun. 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

Comments on electron

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