het·ero·mor·pho·sis noun \-ˈmȯr-fə-səs also -mȯr-ˈfō-\
: 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)
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
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