1) Cryptorchidism 2) Cryptorchidy 3) Cryptorchism 4) Monorchism 1) Monorchism 
Synonym for monorchism ... A condition in which only one testis is apparent, the other being absent or undescended. ... Synonym: monorchia, monorchidism. ... Origin: mono-+ G. Orchis, testis ... (05 Mar 2000) ... 
(mon-or´kid-iz-әm) monorchism.
Type: Term Pronunciation: mon-ōr′ki-dizm Synonyms: monorchism
monorchid, monorchidism, monorchidic Having only one testicle or apparently having only one while the other one is undescended.
a prenatal or postnatal condition in which one testis is absent or has not descended into the scrotum.