Definition of neutron
: 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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Recent Examples of neutron from the Web
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An axion is a hypothetical particle that was invented 41 years ago to solve a problem in the theory of the strong nuclear force, which binds particles called quarks to make protons and neutrons.
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Warhead designers tailor the size of a nuke blast by using gasses that increase neutrons present in the initial reaction or by adding an optional, secondary thermonuclear charge.
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Physicists wanted to know what these hadrons — particularly the buildings blocks of the atom's nucleus, the proton and neutron — were made of.
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Almost everything around us is made up of fermions: electrons, protons, and neutrons are all fermions.
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Protons and neutrons are familiar as tiny solids, but particle accelerators can melt them into what’s called a quark-gluon plasma, or QGP.
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The extra neutron in carbon-13 causes organisms to prefer its lighter version; non-biological chemical reactions are typically more indiscriminate.
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Then the accelerator was used to perform what is called deep inelastic scattering, in which electrons bombard protons and neutrons.
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The nucleus, in turn, was found to be composed of protons and neutrons.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'neutron.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of neutron
probably from neutral
NEUTRON Defined for English Language Learners
Definition of neutron for English Language Learners
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physics : a very small particle of matter that has no electrical charge and is part of the nucleus of all atoms except hydrogen atoms
NEUTRON Defined for Kids
Definition of neutron for Students
: a particle that has a mass nearly equal to that of the proton but no electrical charge and that is present in all atomic nuclei except those of hydrogen
Medical Dictionary
medical Definition of neutron
: 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
Learn More about neutron
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See words that rhyme with neutron Spanish Central: Translation of neutron Nglish: Translation of neutron for Spanish speakers Britannica.com: Encyclopedia article about neutron
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