morphosis
/mɔːˈfəʊsɪs/noun
The formation or development of an organ, especially as marked by structural change; the manner in which this occurs. Now rare.
Origin
Late 17th century (in an earlier sense). From post-classical Latin morphosis act of forming, shaping from Hellenistic Greek μόρϕωσις formation, shaping, configuration, form, semblance from ancient Greek μορϕοῦν to shape, fashion (from μορϕή form: see -morph) + -ωσις.