TESTIS By N., Sam M.S. - 5 noun. the primary reproductive organ in men, a couple of which are typically found within the scrotum. Commonly referred to as orchis. TESTIS: "Injury to the testis can render a male infertile." Related Psychology Terms HOMOSEXUALITY (Female) INFERTTLITY HOMOSEXUALITY (Male) A Comparison of Maternal and Paternal Filicide IMPOTENCE HEAD INJURY (CHRONIC TRAUMATIC DISORDERS) Dissociative Identity Disorder HOMOSEXUALITY (ETIOLOGY AND THERAPY) MARRIAGE THERAPY SEXUAL DEVIATIONS (GENERAL) Cite this page: N., Sam M.S., "TESTIS," in PsychologyDictionary.org, April 29, 2013, https://psychologydictionary.org/testis/ (accessed August 15, 2022).