Definition of "epididymis" [ep•i•did•y•mis]

• A long, narrow, convoluted tube, part of the spermatic duct system, that lies on the posterior aspect of each testicle, connecting it to the vas deferens. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The epididymis is a very tiny, tightly coiled tubule, which runs along the back of the testicle from top to bottom."
• "This tunic or coat sends fibrous partitions into the testis which divide the organ into lobules, each one being conical in shape with the apex directed towards the epididymis, which is that mass of blood vessels and tissues which one can feel on one side of each testis."
• "Upon the outside of the testicle, the tube or duct is found twisted and forming a slight bunch, known as the epididymis, _f_, _g_, _h_."