- adventitious (adj.)[adventitious 词源字典]
- "of the nature of an addition from without," c. 1600, from Medieval Latin adventitius "coming from abroad, extraneous," a corruption of Latin adventicius "foreign, strange, accidental," from advent- past participle stem of advenire "arrive" (see advent). Related: Adventitiously; adventitiousness.[adventitious etymology, adventitious origin, 英语词源]