perimysium

noun

peri·​my·​si·​um ˌper-ə-ˈmi-zhē-əm 

-zē-

plural perimysia ˌper-ə-ˈmi-zhē-ə 

-zē-

: the connective-tissue sheath that surrounds a muscle and forms sheaths for the bundles of muscle fibers

Examples of perimysium in a Sentence

Recent Examples on the Web

Muscle fibers are surrounded by networks of fat and connective tissue (endomysium, perimysium, and epimysium). — Ashton Yoon, Discover Magazine, 30 Aug. 2016

Word History

Etymology

borrowed from New Latin (in German context), from peri- peri- + Greek my-, mŷs "mouse, muscle" + New Latin -ium -ium, after periosteum periosteum and perichondrium perichondrium — more at mouse entry 1

Note: The term was introduced by the German physician and anatomist Johann Christian August Clarus (1774-1854) in Annalen des königlichen klinischen Instituts am St. Jakobshospital in Leipzig, 1. Band, 2 Abteilung, Nr. 3 (see Leipziger Literatur-Zeitung, Nr. 300, am 1. Dezember, 1812, p. 2399). Note that the combinatory form of mŷs should be my- rather than mys-.

First Known Use

circa 1842, in the meaning defined above

Rhymes for perimysium

• elysium

Medical Definition

perimysium

noun

peri·​my·​si·​um ˌper-ə-ˈmiz(h)-ē-əm 

plural perimysia -ē-ə 

: the connective-tissue sheath that surrounds a muscle and forms sheaths for the bundles of muscle fibers