Gy*nan`dro*mor"phism (- môr"f&ibreve;z'm),n. [Gr. gynh` a woman, female + 'anh`r, 'andro`s, a man, male + morfh` form.] (Zoöl.) An abnormal condition of certain animals, in which one side has the external characters of the male, and the other those of the female.