Early 19th century; earliest use found in Noah Webster (1758–1843), lexicographer. From ancient Greek ὄνομα name + -mantic, with haplology, after onomantical.
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。