gubernaculum

noun
gu·​ber·​nac·​u·​lum | \ ˌgü-bər-ˈnak-yə-ləm How to pronounce gubernaculum (audio) \
plural gubernacula\ -​lə How to pronounce gubernacula (audio) \

Medical Definition of gubernaculum

: a part or structure that serves as a guide especially : a fibrous cord that connects the fetal testis with the bottom of the scrotum and by failing to elongate in proportion to the rest of the fetus causes the descent of the testis

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