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 Opened in 1967, the hulking seven-story building houses classrooms, labs and offices for biology, chemistry, environmental science, physics, electron microscopy and nanofabrication. Betsy Hammond, oregonlive, "Local tech entrepreneurs give Portland State $4.5 million to kickstart upgrades to aging science building," 29 Jan. 2020 Then comes a key technological breakthrough that’s the microscopic equivalent of surface mining a seam of coal in Appalachia: focused ion beam milling combined with scanning electron microscopy, or FIB-SEM to its fans. Sharon Begley, STAT, "A ‘landmark’ achievement: Scientists trace full wiring diagram of the fly brain’s core," 22 Jan. 2020 To study the overall structure and function of the small feathers, the team used scanning electron microscopy to view each feather in minute detail. Rachel Fritts, Ars Technica, "Forgotten trove of fossil feathers belonged to tiny polar dinosaurs," 15 Jan. 2020 As the cells began dying , a sign the virus was replicating, the team used electron microscopy and DNA-matching technologies to conclusively determine that the culprit was a coronavirus. Megan Molteni, Wired, "China's Swift ID of a New Virus Is a Win for Public Health," 13 Jan. 2020 In his work, Whittingham harnessed the enormous tendency of lithium — the lightest metal — to give away its electrons to make a battery capable of generating just over two volts. Author: David Keyton, Jamey Keaten, Anchorage Daily News, "Nobel Prize in chemistry honors breakthroughs on lithium-ion batteries," 9 Oct. 2019 Baumgartner and the other researchers drilled into the rock to take samples and examined them using a variety of cutting-edge tools and techniques, including high-powered electron microscopy, spectroscopy and isotope analysis. Fox News, "Scientists find the 'smoking gun,' signs of life from 3.5B years ago," 26 Sep. 2019 The basic commitment is that the fundamental constituents of reality—perhaps electrons and quarks—have incredibly simple forms of experience. Gareth Cook, Scientific American, "Does Consciousness Pervade the Universe?," 14 Jan. 2020 But all those electron-proton couples formed an omnipresent hydrogen fog that stopped one particular ultraviolet hue from breaking through. Charlie Wood, Popular Science, "Young galaxies transformed the early universe by blowing bubbles," 10 Jan. 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

11 Feb 2020

Cite this Entry

“Electron.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/electron. Accessed 24 Feb. 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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