elongate (v.)youdaoicibaDictYouDict[elongate 词源字典]
"to make long or longer," 1530s, from Late Latin elongatus, past participle of elongare "to prolong, protract" (see elongation). Earlier in the same sense was elongen (mid-15c.). Related: Elongated; elongating.[elongate etymology, elongate origin, 英语词源]