monorchidism

[muh-nawr-ki-diz-uh m]

noun Pathology.

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

Also mo·nor·chism [muh-nawr-kiz-uh m] /məˈnɔr kɪz əm/.

Origin of monorchidism

First recorded in 1860–65; monorchid + -ism
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019