: 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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Quarks are the particles in the standard model of particle physics that bind together and comprise particles like protons and neutrons.
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Robert Lea, Space.com, 21 Feb. 2025
Instead of fuel rods stuck in pressurized water as a neutron moderator and coolant, these reactors use nuclear fuel mixed with molten salt at normal atmospheric pressure.
—David Szondy, New Atlas, 20 Feb. 2025
The idea is that a telltale sign of a very advanced alien technology would fuse the hydrogen isotope of deuterium, which unlike normal hydrogen contains a neutron in its nucleus, into helium to produce massive amounts of energy.
—Bruce Dorminey, Forbes, 13 Dec. 2024
No one is sure what happens to neutrons in such conditions.
—Quanta Magazine, 6 Nov. 2024
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Robert Lea, Space.com, 21 Feb. 2025
Instead of fuel rods stuck in pressurized water as a neutron moderator and coolant, these reactors use nuclear fuel mixed with molten salt at normal atmospheric pressure.
—David Szondy, New Atlas, 20 Feb. 2025
The idea is that a telltale sign of a very advanced alien technology would fuse the hydrogen isotope of deuterium, which unlike normal hydrogen contains a neutron in its nucleus, into helium to produce massive amounts of energy.
—Bruce Dorminey, Forbes, 13 Dec. 2024
No one is sure what happens to neutrons in such conditions.
—Quanta Magazine, 6 Nov. 2024
See All Example Sentences for neutron
Cite this Entry
“Neutron.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/neutron. Accessed 3 Mar. 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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