Late 19th century; earliest use found in Journal of the Royal Anthropological Institute. From platy- + ancient Greek κνήμη tibia + -y, perhaps after French platycnémie.
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。