conjoin (v.)youdaoicibaDictYouDict[conjoin 词源字典]
late 14c., from Old French conjoindre "meet, come together" (12c.), from Latin coniungere "to join together," from com- "together" (see com-) + iungere "join" (see jugular). Related: Conjoined, conjoining.[conjoin etymology, conjoin origin, 英语词源]