epididymis noun. [ɛpɪ'dɪdɪmɪs] Pl. epididymides [ɛpɪdɪ'dɪmɪdi:z]. Cf. earlier DIDYMIS. E17.
[Greek epididumis, formed as EPI- + didumos testicle, twin, from duo two.]
Anatomy. A convoluted duct on the posterior surface of the testis, where sperm are stored and along which they pass to the vas deferens.

■ epididymal adjective L17.

■ epididy'mectomy noun (an instance of) surgical removal of an epididymis E20.

■ epididy'mitis noun inflammation of an epididymis M19.

[TahlilGaran] English Dictionary ▲