Belonging to the other gender, sex or kind (genus) of person (than the one it is found on).
1894, Prince Albert Morrow, A System of Genito-urinary Diseases, Syphilology and Dermatology, page 840:
Heterogenic Hypertrichosis is but another name for that form of hypertrichosis that most frequently demands treatment at our hands — that is, the growth of the beard in women.
1902, John William Ballantyne, Manual of Antenatal Pathology and Hygiene: The Foetus, page 321:
... unusual locality or over its whole surface, is provided with hair, and the adult woman whose hairy covering resembles in extent and distribution the male type, are examples, the one of heterotopic, and the other of heterogenic hypertrichosis. Further, at the period of puberty the hair which then normally appears in both sexes may be excessive, and the girl at this time may show the arrangement and development of hair which belong ...
1912, George Thomas Jackson, Charles Wood McMurtry, A Treatise on Diseases of the Hair, page 147:
BEARDED WOMEN . — The growth of the beard in women is the form of hypertrichosis which concerns us most, as it is the deformity which we will be called upon to treat. It has been called the heterogenic form. As women grow old ...
