The definition of a proton is a particle with a positive charge that is in the nucleus of an atom.noun
An example of a proton is the single proton in the nucleus of a hydrogen atom.YourDictionary definition and usage example. Copyright © 2013 by LoveToKnow Corp.
Origin: ModL < Gr prōton, neut. of prōtos, first: see proto-
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noun Abbr. p
Origin: From Greek prōton, neuter of prōtos, first; see per1 in Indo-European roots.
- pro·tonˈic adjective
proton - Cultural Definition
proton - Medical Definition
proton - Science Definition
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