monorchidism

American  

[muh-nawr-ki-diz-uhm] / məˈnɔr kɪˌdɪz əm /

Also monorchism

noun

Pathology.

1. a prenatal or postnatal condition in which one testis is absent or has not descended into the scrotum.

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Etymology

Origin of monorchidism

First recorded in 1860–65; monorchid + -ism