heteromorphosisn.

1891 F. P. Foster Illustr. Encycl. Med. Dict. III. 1866/1 Heteromorphosis, a malformation. The heteromorphoses..in Fuchs's classification of skin diseases are a genus..including nævus, ochthiasis, polytrichia, and polonychia.

1922 Guy's Hosp. Rep. 72 200 Cells differing in structure from those characteristic of the part of the body are produced. Here we have a heteroplasia or heteromorphosis.

1894 Jrnl. Morphol. 9 418 To this phenomenon of the reproduction of an organ typically different from the one which had originally occupied that position, he [sc. Jacques Loeb] has given the name heteromorphosis.

1901 J. Loeb Compar. Physiol. Brain xiv. 203 The processes of heteromorphosis—that is, the transformation or substitution of one organ for a morphologically different one by means of certain external influences—force us to the same view.

1932 J. S. Huxley Probl. Relative Growth vi. iii. 172 The production of axial heteromorphosis in regeneration, such as biaxial heads or tails, can also be satisfactorily interpreted in terms of the gradient hypothesis.

1940 R. Goldschmidt Material Basis Evol. 326 For a long time the phenomenon of homoeosis (called heteromorphosis by some authors) has been known as an occasional monstrosity in arthropods... The classical example is the regeneration of an antenna after removal of the eyestalk in Decapods.

1966 E. D. Hay Regeneration i. 34 A unique kind of heteromorphosis called homeosis occurs occasionally in arthropod regeneration.