Proton
WordNet
noun
(1) A stable particle with positive charge equal to the negative charge of an electron
WiktionaryText
Etymology
From , neuter of
Noun
- A positively charged subatomic particle forming part of the nucleus of an atom and determining the atomic number of an element; the nucleus of the most common isotope of hydrogen; composed of two up quarks and a down antiquark
Declension
Declension
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Noun
- proton