c. 1600, "fleshy mass at the back of the testicles," Modern Latin, literally "that which is on the testicles," from Greek epididymis, a word probably coined by Greek anatomist Herophilus (c. 353-280 B.C.E.) from epi "on" (see epi-) + didymos "testicle," literally "double, twofold" (adj.). An acceptable Englishing of it is in Richard Brome's "The Court Beggar" (1652):
Strangelove. I doe not slight your act in the discovery,
But your imposture, sir, and beastly practise
Was before whisper'd to me by your Doctor
To save his Epididamies
1. Three anatomic parts of the epididymis are recognized.
2. Spermatozoa not only mature but also are stored in epididymis.
3. The pathology revealed a leiomyoma with an intact testis and epididymis.
4. Longitudinal section of a testicle showing the seminiferous tubules and the convoluted epididymis.
5. Spermatoceles are usually found at the head the epididymis, next the top the testicle.