: 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
Examples of neutron in a Sentence
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As things cooled, quarks formed and then condensed into protons and neutrons.
—
Philip Ball, Wired News, 8 June 2025
Other sites under the agency's safeguards include a miniature neutron source reactor in Damascus and a facility in Homs that can process yellow-cake uranium.
—Arkansas Online, 5 June 2025
But Berzin said that the design will incorporate a layer of lithium that will form tritium when bombarded by neutrons from the stellarator.
—ArsTechnica, 1 Apr. 2025
The gravitational pull of the star's remains would have been strong enough to crush together protons and electrons to form neutrons, meaning a neutron star is mostly made of neutrons.
—Charles Q. Choi, Space.com, 22 May 2025
See All Example Sentences for neutron
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Philip Ball, Wired News, 8 June 2025
Other sites under the agency's safeguards include a miniature neutron source reactor in Damascus and a facility in Homs that can process yellow-cake uranium.
—Arkansas Online, 5 June 2025
But Berzin said that the design will incorporate a layer of lithium that will form tritium when bombarded by neutrons from the stellarator.
—ArsTechnica, 1 Apr. 2025
The gravitational pull of the star's remains would have been strong enough to crush together protons and electrons to form neutrons, meaning a neutron star is mostly made of neutrons.
—Charles Q. Choi, Space.com, 22 May 2025
See All Example Sentences for neutron
Cite this Entry
“Neutron.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/neutron. Accessed 17 Jun. 2025.
Copy CitationKids Definition
neutron
noun
neu·tron
ˈn(y)ü-ˌträn 
: 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
: 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
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