adherence (n.)youdaoicibaDictYouDict[adherence 词源字典]
mid-15c., "attachment to a person, support," from Middle French adhérence, from Latin adhaerentia, noun of action from adhaerentem (nominative adhaerens), present participle of adhaerare (see adherent (adj.)).[adherence etymology, adherence origin, 英语词源]