: 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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Another breed of hypothetical particle, axions are predicted to exist by quantum chromodynamics, which is our best quantum theory of the strong force that binds quarks together to form protons, neutrons and ultimately atomic nuclei.
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Keith Cooper, Space.com, 19 Dec. 2024
Deuterium and tritium, isotopes of hydrogen with, respectively, one and two neutrons in their nuclei, are the preferred fuels for fusion because their nuclei can overcome the repulsive forces more easily than those of heavier atoms.
—IEEE Spectrum, 28 Oct. 2024
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
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Keith Cooper, Space.com, 19 Dec. 2024
Deuterium and tritium, isotopes of hydrogen with, respectively, one and two neutrons in their nuclei, are the preferred fuels for fusion because their nuclei can overcome the repulsive forces more easily than those of heavier atoms.
—IEEE Spectrum, 28 Oct. 2024
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
See all Example Sentences for neutron
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“Neutron.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/neutron. Accessed 6 Jan. 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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