novation (n.)youdaoicibaDictYouDict[novation 词源字典]
"replacement of an old obligation by a new one," 1530s, from Latin novationem (nominative novatio) "a making new, renewal," noun of action from past participle stem of novare "make new," from novus "new" (see new).[novation etymology, novation origin, 英语词源]