A quantity in a non-Euclidean space or a space of more than three dimensions, analogous to distance in two- or three-dimensional Euclidean space.
Late 19th century; earliest use found in The Century Dictionary.
英汉双解词典包含464360条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。