distillation Syllabification: (dis·til·la·tion)Pronunciation: /ˌdistəˈlāSHən/Translate distillation | into German | into Italian Definition of distillation noun 1the action of purifying a liquid by a process of heating and cooling:the petroleum distillation process 2the extraction of the essential meaning or most important aspects of something:the film is a distillation of personal experiencesdistillation in other Oxford dictionaries Definition of distillation in the British & World English dictionary