1930s; earliest use found in Parnassus. From the name of Man Ray + -o- + -gram, after French rayogramme (Man Ray, 1922 or earlier).
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。