monorchis

plural monorchides

1. A person with only one testicle.

   Monorchides, as they are called, have been known to be prolific.

   1873, Alfred Swaine Taylor, The Principles and Practice of Medical Jurisprudence

   5 more examples

   A preparation from a monorchis, or the testis (from a boy of ten years of age), not yet descended from the cavity of the abdomen into the scrotum.

   1828, Joshua Brookes, Brookesian Museum

   Palletta examined the body of a man aged about fifty, who was supposed to be a monorchis. The spermatic vessels on the left side, as they approached the pelvis, gradually disappeared, a white transparent process alone remaining […]

   1843, Thomas Blizard Curling, Paul Beck Goddard, A Practical Treatise on the Diseases of the Testis, page 103

   Monorchides, or persons possessing only one testicle, are now excluded even from the doubtful causes of impotence […]

   1878, Francis Ogston, Lectures on medical jurisprudence, page 180

   I myself knew a civil official in Europe, a monorchis with large penis, who was very vigorous in sexualibus until advanced age, and late in life begat two boys, the younger of whom is also a monorchis. […] In many places the popular belief accredits such monorchids with possessing extraordinary power.

   1901, Victor G. Vecki, The Pathology and Treatment of Sexual Impotence

   The same practices are recorded in the case of Tamerlane, the Asiatic conqueror, who was also a monorchis.

   1961, Harry E. Wedeck, Dictionary of Aphrodisiacs, New York: The Citadel Press, page 45