Heterotopism
Heterotopism , noun
[Hetero- + Greek {not transcribed} place: compare French hétérotopie.]
1.
(Medicine) A deviation from the natural position; -- a term applied in the case of organs or growths which are abnormal in situation.
2.
(Biology) A deviation from the natural position of parts, supposed to be effected in thousands of years, by the gradual displacement of germ cells.
Also: Heterotopy