scansion (n.)youdaoicibaDictYouDict[scansion 词源字典]
1670s, "action of marking off of verse in metric feet," from Late Latin scansionem (nominative scansio), in classical Latin, "act of climbing," noun of action from past participle stem of scandere "to climb" (see scan (v.)). From 1650s in English in literal sense of "action of climbing up."[scansion etymology, scansion origin, 英语词源]