epsilon的词源

英文词源

epsilon (n.)

from Greek, literally e psilon "bare -e-, -e- and nothing else," so called by late grammarians in contradistinction to the diphthong -ai-, which had come to have the same sound. Greek psilon "smooth, simple" is of uncertain origin (Watkins suggests PIE root *bhes- (1) "to rub").

中文词源

epsilon：希腊字母表的第五个字母E

希腊字母e psilon, 即仅发e音，以区分同时期的双元音-ai. 参照upsilon.

该词的英语词源请访问趣词词源英文版：epsilon 词源，epsilon 含义。