culminate (v.)youdaoicibaDictYouDict[culminate 词源字典]
1640s, from Late Latin culminatus past participle of culminare "to top, to crown," from Latin culmen (genitive culminis) "top, peak, summit, roof, gable," also used figuratively, contraction of columen (see column). Related: Culminated; culminating.[culminate etymology, culminate origin, 英语词源]
culmination (n.)youdaoicibaDictYouDict
1630s, from French culmination, noun of action from past participle stem of Late Latin culminare (see culminate). Originally a term in astronomy/astrology; figurative use is from 1650s.