elementary particle

quantum particle having no known substructure; quark, electron, photon, etc.

en-GB/ˌɛlɪˈmɛntəɹɪ ˈpɑːtɪkəl/
en-US/ˌɛləˈmɛnt͡ʃɹi ˈpɑɹtɪkəl/

カテゴリ：

indivisible particle