noun🔗ShareПротонA positively charged subatomic particle forming part of the nucleus of an atom and determining the atomic number of an element, composed of two up quarks and a down quark."The hydrogen atom has only one proton in its nucleus. "Атом водорода имеет только один протон в своем ядре.physicselementchemistryscienceChat with AIVocabulary GamePractice Reading
