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 (ĕp′ə-mĭz′ē-əm, -mĭzh′ē-)
n. pl. ep·i·mys·i·a (-mĭz′ē-ə, -mĭzh′-)
The external sheath of connective tissue surrounding a muscle.

[New Latin epimȳsium : epi- + Greek mūs, muscle; see mūs- in Indo-European roots.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


n, pl -sia (-zɪə)
(Anatomy) anatomy the sheath of connective tissue that encloses a skeletal muscle
[from New Latin, from epi- + Greek mus mouse, muscle]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌɛp əˈmɪz i əm, -ˈmɪʒ-)

n., pl. -my•si•a (-ˈmɪz i ə, -ˈmɪʒ-)
the sheath of connective tissue around a muscle.
[1895–1900; epi- + Greek mŷs mouse, muscle (compare myo-) + -ium2]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
Contrary to what was expected, the pictures show a rare non-tennis leg calf injury: the epimysia of the MG and of the SL were, in fact, ecostructurally intact.
The CF is easily distinguishable by the epimysia of the medial gastrocnemius (MG) and soleus (SL) being between these three structures (hyperechoic) interposed by two layers of hypoechoic connective tissue.