MEANING
A positively charged particle in atomic nuclei whose number determines the chemical element.
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Words that belong together
- proton beam
- proton number
On the page
The instrument measured the proton beam.
Word forms
- Base
- proton
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Usage notes
Primary category: sci-fi. Forms: Singular proton; plural protons. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings. Established modern English lexical item. No separate regional spelling or grammatical inflection entry. Commonness: moderately common.
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