epididymis

noun

ep·i·did·y·mis | \ˌe-pə-ˈdi-də-məs

plural epididymides\ ˌe-pə-ˈdi-də-mə-ˌdēz

Definition of epididymis

: a system of ductules emerging posteriorly from the testis that holds sperm during maturation and that forms a tangled mass before uniting into a single coiled duct which is continuous with the vas deferens

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Ms Chan therefore concentrated her attentions on part of the male genital tract called the epididymis. — The Economist, "The generation gameThe ramifications of a new type of gene," 22 Feb. 2018 Very few are actually released into the epididymis. — Kristen Jordan Shamus, Detroit Free Press, "Michigan State researchers are on the cusp of developing a birth control for men," 11 Oct. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'epididymis.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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The first known use of epididymis was in 1610

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epididymis

noun

ep·i·did·y·mis | \ˌep-ə-ˈdid-ə-məs

plural epididymides\ -mə-ˌdēz

Medical Definition of epididymis

: a system of ductules that emerges posteriorly from the testis, holds sperm during maturation, and forms a tangled mass before uniting into a single coiled duct which comprises the highly convoluted body and tail of the system and is continuous with the vas deferens — see vasa efferentia