Anorchia (or anorchism) is an XY Disorder of Sex Development in which individuals have both testes absent at birth. Within a few weeks of fertilization, the embryo develops rudimentary gonads (testes), which produce hormones responsible for the development of the reproductive system. If the testes fail to develop within eight weeks, the baby will ... Found on http://en.wikipedia.org/wiki/Anorchia
<embryology> The congenital absence of one or both testicles. Differs from cryptorchism where the testes are present, but have not descended into the scrotum. ... (13 Oct 1997) ... Found on http://www.encyclo.co.uk/local/20973