noun 다운로드 🔗공유 중성자 A subatomic particle forming part of the nucleus of an atom and having no charge; it is a combination of an up quark and two down quarks. Examples : "The atom's nucleus contains protons and neutrons. " 원자핵은 양성자와 중성자를 포함한다. physics element chemistry AI와 채팅어휘 게임독해 연습