TESTIS Meaning of TESTIS in English /tes"tis/ , n. , pl. testes /-teez/ . Anat., Zool.the male gonad or reproductive gland, either of two oval glands located in the scrotum. [ 1675-85; ] Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012