陽よう子しようしCommon wordFreq.FrequencyTop 20,000Meanings1nounprotonphysicsPhysics term for the positively charged subatomic particle in an atomic nucleus.陽よう子しは正せいの電でん荷かを持もつ素そ粒りゅう子しである。A proton is an elementary particle with a positive charge.水すい素そ原げん子しの原げん子し核かくは一ひとつの陽よう子しからなる。The nucleus of a hydrogen atom consists of a single proton.