heteromorphosis

noun

het·​ero·​mor·​pho·​sis

-ˈmȯr-fə-səs also -mȯr-ˈfō-

plural heteromorphoses -ˌsēz 

1

: the production in an organism of an abnormal or misplaced part especially in place of one that has been lost (as the regeneration of a tail in place of a head)

2

a

: the production of a malformed or malposed tissue or organ

b

: the formation of tissue of a different type from that from which it is derived