
1) Antineutron 2) Antiproton 3) Neutron 4) Proton
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https://www.crosswordclues.com/clue/nucleon

1) Baryon 2) Heavy particle 3) Proton or neutron
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https://www.crosswordclues.com/clue/nucleon

Compare with proton, neutron and atomic nucleus. A proton or a neutron in the atomic nucleus.
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http://antoine.frostburg.edu/chem/senese/101/glossary/n.shtml

In chemistry and physics, a nucleon is one of the particles that makes up the atomic nucleus. Each atomic nucleus consists of one or more nucleons, and each atom in turn consists of a cluster of nucleons surrounded by one or more electrons. There are two known kinds of nucleon: the neutron and the proton. The mass number of a given atomic isotope ...
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http://en.wikipedia.org/wiki/Nucleon

either of the subatomic particles, the proton and the neutron, constituting atomic nuclei. Protons (positively charged) and neutrons (uncharged) ... [6 related articles]
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http://www.britannica.com/eb/a-z/n/61

A particle found in the nucleus, that is, a proton or a neutron.
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http://www.chemicalglossary.net/definition/1177-Nucleon

refers to the particles in the nucleus-- Protons and Neutrons.
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http://www.chemicalglossary.net/definition/1194-NUCLEON

A proton or neutron found in an atomic nucleus.
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http://www.chemistry-dictionary.com/definition/nucleon.php

The generic name for a neutron or proton. Both particles are found in the nucleus of atoms and are bound together by the strong force. Protons and neutrons, along with many other subatomic particles which were once thought to be elementary (that is, not built up from smaller constituents), are now k...
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http://www.daviddarling.info/encyclopedia/N/nucleon.html

constituent of an atomic nucleus, either a proton or a neutron NOTE - The proton and the neutron, both of spin 1/2, have approximately the same rest mass and can transform into each other through weak interaction.
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http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=111-14-16

constituent of an atomic nucleus, either proton or neutron NOTE - The proton and the neutron, both of spin ½, have approximately the same rest mass and can transform into each other through weak interaction.
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http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=393-11-12

proton or neutron forming part of the atomic nucleus
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http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=881-02-48

<physics> Any particle found in the structure of an atomic nucleus, i.e., neutron or proton. ... (16 Dec 1997) ...
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http://www.encyclo.co.uk/local/20973

(noo´kle-on) a proton or neutron; one of the particles of an atomic nucleus.
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http://www.encyclo.co.uk/local/21001

a proton or a neutron; a constituent of the nucleus of an atom.
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http://www.encyclo.co.uk/local/21808

Type: Term Pronunciation: nū′klē-on Definitions: 1. One of the subatomic particles of the atomic nucleus, either a proton or a neutron. 2. Slang term for specialist in nuclear medicine.
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http://www.medilexicon.com/medicaldictionary.php?t=61274

[
n] - a constituent (proton or neutron) of an atomic nucleus
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http://www.webdictionary.co.uk/definition.php?query=nucleon

A proton or neutron.
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https://www.encyclo.co.uk/local/20039

Either a proton or a neutron.
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https://www.encyclo.co.uk/local/20687

Any of two particles normally found in an atomic nucleus. i.e. protons and neutrons.
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https://www.encyclo.co.uk/local/20750
noun a constituent (proton or neutron) of an atomic nucleus
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https://www.encyclo.co.uk/local/20974

A proton or neutron.
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https://www.encyclo.co.uk/local/21092

In particle physics, either a proton or a neutron, when present in the atomic nucleus. Nucleon number is an alternative name for the mass number of an atom
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https://www.encyclo.co.uk/local/21221

a proton or neutron found in an atomic nucleus.
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https://www.encyclo.co.uk/local/22434

a proton or neutron, esp. when considered as a component of a nucleus.
Found on
https://www.infoplease.com/dictionary/nucleon
No exact match found.