lipolysis Syllabification: (li·pol·y·sis)Pronunciation: /liˈpäləsis, lī-/Definition of lipolysis noun Physiology the breakdown of fats and other lipids by hydrolysis to release fatty acids. Derivatives lipolyticPronunciation: /ˌlipəˈlitik, ˌlī-/ adjective lipolysis in other Oxford dictionaries Definition of lipolysis in the British & World English dictionary