heteromorphosis het·er·o·mor·pho·sis (hět'ə-rō-môr'fə-sĭs, -môr-fō'sĭs)
The development of one tissue from a tissue of another kind or type.
The embryonic development of a tissue or an organ inappropriate to its site.
Galls exhibit yet another instructive kind of heteromorphosis.
In all these cases of heteromorphosis the original form is not restored.
Regeneration is the reproduction of parts like those lost; heteromorphosis is the reproduction of parts unlike those lost.