neutron

noun

neu·​tron ˈnü-ˌträn How to pronounce neutron (audio)
ˈnyü-
: an uncharged elementary particle that has a mass nearly equal to that of the proton and is present in all known atomic nuclei except the hydrogen nucleus
neutronic adjective

Examples of neutron in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Isotopes are variants of a chemical element that have the same number of protons but different numbers of neutrons in their nuclei. Jess Thomson, Newsweek, 5 Dec. 2024 They are created when protons and neutrons collide, which generates particles known as pions that then decay into muons. IEEE Spectrum, 3 Dec. 2024 Protons and neutrons are composed of up and down quarks. Tom Siegfried, Discover Magazine, 29 Nov. 2024 These hydrogen isotopes will then combine through nuclear fusion, and in that process release neutrons. Chris Baraniuk, WIRED, 27 Nov. 2024 See all Example Sentences for neutron 

Word History

Etymology

probably from neutral

First Known Use

1921, in the meaning defined above

Time Traveler
The first known use of neutron was in 1921

Dictionary Entries Near neutron

Cite this Entry

“Neutron.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/neutron. Accessed 22 Dec. 2024.

Kids Definition

neutron

noun
neu·​tron ˈn(y)ü-ˌträn How to pronounce neutron (audio)
: an uncharged atomic particle that has a mass nearly equal to that of the proton and is present in all known atomic nuclei except the hydrogen nucleus

Medical Definition

neutron

noun
neu·​tron ˈn(y)ü-ˌträn How to pronounce neutron (audio)
: an uncharged elementary particle that has a mass nearly equal to that of the proton and is present in all known atomic nuclei except the hydrogen nucleus

More from Merriam-Webster on neutron

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