ep·i·mor·pho·sis \ˌepəˈmȯrfəsə̇s sometimes -ˌmȯrˈfōs-\noun Etymology: New Latin, from epi- + -morphosis 1.: regeneration of a part or organism involving extensive cell proliferation followed by differentiation — compare morphallaxis 2.: development without fundamental changes of form (as without adding segments) — compare metamorphosis