embryogenesis Syllabification: (em·bry·o·gen·e·sis)Pronunciation: /ˌembrē-ōˈjenəsis/Definition of embryogenesis noun Biology the formation and development of an embryo. Derivatives embryogeneticPronunciation: /-jəˈnetik/ adjective embryogenicPronunciation: /-ˈjenik/ adjective embryogenyPronunciation: /ˌembrēˈäjənē/ noun embryogenesis in other Oxford dictionaries Definition of embryogenesis in the British & World English dictionary