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 In particular, Lin and Kozaczuk calculated that low-mass dark matter would create plasmons at about one ten-thousandth the rate of directly producing an electron or photon. Daniel Garisto, Scientific American, "Direct Proof of Dark Matter May Lurk at Low-Energy Frontiers," 9 June 2020 Known by clever acronyms such as EDELWEISS III, SENSEI and CRESST-III, they are made of materials such as germanium, silicon, and scheelite and are sensitive to dark matter collisions that would create just a single electron. Daniel Garisto, Scientific American, "Direct Proof of Dark Matter May Lurk at Low-Energy Frontiers," 9 June 2020 When Vaccaro dissected flies at various levels of deprivation, their tissues all seemed unharmed, with one very marked exception: Their guts were thick with reactive oxygen species (ROS), molecules with an oxygen atom that bears a spare electron. Quanta Magazine, "Why Sleep Deprivation Kills," 4 June 2020 The Standard Model demands that both types of decays should play out in exactly the same way, but a 2014 analysis by the LHCb team uncovered a possible difference between the muon events and the electron events. Quanta Magazine, "Growing Anomalies at the Large Hadron Collider Raise Hopes," 26 May 2020 This phenomenon, known as the wave-particle duality of light, is fundamental to all of quantum mechanics and has influenced the development of electron microscopes and solar cells. Everyday Einstein Sabrina Stierwalt, Scientific American, "Einstein's Legacy: The Photoelectric Effect," 18 Aug. 2015 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

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

30 Jul 2020

Cite this Entry

“Electron.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/electron. Accessed 5 Aug. 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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