[ sahr-kuh-meer ]
/ ˈsɑr kəˌmɪər /

noun Biology.

any of the segments of myofibril in striated muscle fibers.

Origin of sarcomere

First recorded in 1890–95; sarco- + -mere Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for sarcomere


/ (ˈsɑːkəʊˌmɪə) /


any of the units that together comprise skeletal muscle
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for sarcomere


[ särkə-mîr′ ]


One of the segments into which a fibril of striated muscle is divided.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for sarcomere


[ särkə-mîr′ ]

The contractile unit of a skeletal muscle fiber. Sarcomeres are divided into bands of filaments made of actin or myosin. During muscle contraction, the filaments slide over each other to cause shortening of the sarcomere.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.