electron

noun

elec·​tron i-ˈlek-ˌträn How to pronounce electron (audio)
: 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 Incoming electron neutrinos would occasionally combine with a neutron inside a gallium atom and convert it into a proton, turning the gallium into germanium. Quanta Magazine, 12 July 2024 The primary emission consists of beta particles, high-energy electrons capable of penetrating tumors and surrounding cells, tearing into DNA and causing damage that ultimately triggers cell death. Discover Magazine, 8 July 2024 Different atomic elements absorb and emit light at very specific colors (the electrons zipping around the atom’s nucleus can only absorb discrete amounts of energy, a fact that gave rise to the development of quantum mechanics in the first place). Phil Plait, Scientific American, 5 July 2024 In the famous double-slit experiment, a stream of electrons or photons sent through two slits produces a pattern that could arise only from interfering waves, not particles. Sidney Perkowitz, JSTOR Daily, 5 June 2024 See all Example Sentences for electron 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'electron.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

electr- + -on entry 2

First Known Use

1891, in the meaning defined above

Time Traveler
The first known use of electron was in 1891

Dictionary Entries Near electron

Cite this Entry

“Electron.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/electron. Accessed 27 Jul. 2024.

Kids Definition

electron

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

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