Early 20th century. From super- + conduction. Compare supraconduction and the Dutch noun cited at that entry, and also superconductivity, superconducting, superconductor.
英语词典包含243303条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。