scholiast (n.)youdaoicibaDictYouDict[scholiast 词源字典]
"one who writes explanatory notes upon a classical writer," 1580s, from Late Latin scholiasta, from Late Greek skholiastes, from skholiazein, from skholion "explanatory note or comment," from skhole (see school (n.1)). Related: Scholiastic.[scholiast etymology, scholiast origin, 英语词源]