mesoderm [ mez- uh-durm, mes-, mee-z uh-, -s uh-] EXAMPLES | WORD ORIGIN noun . Embryology the middle germ layer of a metazoan embryo. Origin of mesoderm
First recorded in
-derm Related forms mes·o·der·mal, mes·o·der·mic, adjective
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for mesoderm Historical Examples of mesoderm
To these a third intermediate layer is soon added, the
The formation of the
mesoderm in Teleosts is not definitely understood.
It consists of three layers: ectoderm, endoderm, and
It has been already stated that the
mesoderm is a composite tissue.
The origin and part played by the
mesoderm appeared the most obscure. British Dictionary definitions for mesoderm noun the middle germ layer of an animal embryo, giving rise to muscle, blood, bone, connective tissue, etc See also ectoderm, endoderm Derived Forms mesodermal or mesodermic, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Word Origin and History for mesoderm n.
1858, from French
mésoderme or German Mesoderm, literally "middle skin," coined by German physician Robert Remak (1815-1865) from meso- + Greek derma (see -derm).
Online Etymology Dictionary, © 2010 Douglas Harper
n. The middle embryonic germ layer, lying between the ectoderm and the endoderm, from which connective tissue, muscle, bone, and the urogenital and circulatory systems develop. Related forms mes′o•der ′mic adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
The middle of the three primary germ layers of the embryos of vertebrates and other complex animals. In vertebrates, the mesoderm gives rise to the muscles, bones, cartilage, connective tissue, blood, blood and lymph vessels, dermis, kidneys, and gonads. The mesoderm develops during gastrulation from either the ectoderm or the endoderm. The embryos of simpler animals lack a mesoderm. Compare ectoderm endoderm.
The American Heritage® Science Dictionary
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