Neutron meaning

no͝o'trŏn', nyo͝o'-
The definition of a neutron is a nucleon with no charge.

An example of a neutron is something that turns into a proton and electron.

noun
10
3
The electrically neutral nucleon, a baryon composed of two down quarks and one up quark, which has a mass 1,839 times that of an electron, is stable when bound in an atomic nucleus, but has a mean lifetime of 886 seconds as a free particle. It is a basic component of all atomic nuclei except the protium isotope of hydrogen.
noun
3
4
An uncharged nucleon having a mass of c. 1.675×10-27 kg (c. 939.5729 MeV/c2, c. 1,839 times the mass of an electron): a free neutron, as in nuclear fission, has a half-life of c. 14.8 minutes, is readily absorbed by a nucleus, and decays into a proton, an electron, and a neutrino.
noun
1
4
An electrically neutral subatomic particle in the baryon family, having a mass of 1.674 × 10&spminus;24 grams (1,838 times that of the electron and slightly greater than that of the proton). Neutrons are part of the nucleus of all atoms, except hydrogen, and have a mean lifetime of approximately 1.0×103 seconds as free particles. They consist of a triplet of quarks, including two down quarks and one up quark, bound together by gluons. In radioactive atoms, excess neutrons are converted to protons by beta decay. Beams of neutrons from nuclear reactors are used to bombard the atoms of various elements to produce fission and other nuclear reactions and to determine the atomic arrangements in molecules.
1
5
(physics) A subatomic particle forming part of the nucleus of an atom and having no charge; it is a combination of an up quark and two down quarks.

Symbol: n.

noun
1
5
Advertisement

Origin of neutron

  • neutr(al) –on
    From American Heritage Dictionary of the English Language, 5th Edition