Oxford Dictionary English life sciences nounnoun BrE BrE//ˈlaɪf saɪənsɪz// ; NAmE NAmE//ˈlaɪf saɪənsɪz// [plural] Add to my wordlistjump to other results the sciences concerned with studying humans, animals or plants compare earth science, natural science, physical scienceSee life sciences in the Oxford Learner's Dictionary of Academic EnglishSee life sciences in the Oxford Advanced American DictionaryCheck pronunciation: life sciences oxfordlearnersdictionaries.com