sesqui-youdaoicibaDictYouDict[sesqui- 词源字典]
word-forming element, from Latin sesqui- "one-half more," contraction of *semis-que- "a half in addition," from semis "a half" (see semi-) + -que "and," from PIE *kwe-.[sesqui- etymology, sesqui- origin, 英语词源]