angiogenesis Syllabification: (an·gi·o·gen·e·sis)Pronunciation: /ˌanjē-ōˈjenəsis/Definition of angiogenesis noun Medicine the development of new blood vessels. Derivatives angiogenicPronunciation: /-ˈjenik/ adjective angiogenesis in other Oxford dictionaries Definition of angiogenesis in the British & World English dictionary