the GNU version of the Collaborative International Dictionary of English
n. An abnormal condition of certain animals, in which one side has the external characters of the male, and the other those of the female.
The Century Dictionary and Cyclopedia
n. In entomology, a variation or monstrosity in which the peculiar characters of the male and female are found in the same individual.
Word Usage
"Researchers at the Virginia Institute of Marine Science say that the condition, known as bilateral gynandromorphism, is caused by a "chromosomal mishap.""