apportion (v.)youdaoicibaDictYouDict[apportion 词源字典]
1570s, from Middle French apportionner, from Old French aporcioner "apportion, share out," from a- "to" (see ad-) + portioner "to divide into portions," from portion "share, portion" (see portion). Related: Apportioned; apportioning.[apportion etymology, apportion origin, 英语词源]