distillation (n.)youdaoicibaDictYouDict[distillation 词源字典]
late 14c., "process of distilling," from Late Latin distillationem (nominative distillatio), noun of action from past participle stem of distillare (see distill). Meaning "product of distilling" is from 1590s.[distillation etymology, distillation origin, 英语词源]