Definition of neutron noun from the Oxford Advanced Learner's Dictionary

 

neutron

 noun
noun
BrE BrE//ˈnjuːtrɒn//
 
; NAmE NAmE//ˈnuːtrɑːn//
 
(physics) Molecules and matter
 
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a very small piece of matter (= a substance) that carries no electric charge and that forms part of the nucleus (= central part) of an atom see also electron, proton Wordfinderantiparticle, atom, electron, ion, neutron, nucleus, particle, positron, proton, valency See related entries: Molecules and matter Word Origin early 20th cent.: from neutral + -on.
See the Oxford Advanced American Dictionary entry: neutron

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