The condition of having only one testicle in the scrotum.
A condition in which only one testis is visible.
Condition in which only one testicle has descended into the scrotum; also called monorchidism.
Condition of having only one descended testicle.
Absence of one testis. This is usually due to failure of one testicle to descend into the scrotum before birth. The term is sometimes used for the condition in which one testicle has been removed surgically or destroyed by injury or disease. If the single testis is normal, no adverse effects result from the absence of the other.
Having only one testicle is referred to as monorchism. The likely reasons for this condition include surgical removal or a congenital lack of the testis.