Late 19th century; earliest use found in Ernst Haeckel (1834–1919). From German Medusom from Medu- (in Medusoid) + -som.
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。