[mez-uh-durm, mes-, mee-zuh-, -suh-]
- the middle germ layer of a metazoan embryo.
Origin of mesoderm
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for mesoderm
To these a third intermediate layer is soon added, the mesoderm.Pedagogical Anthropology
The formation of the mesoderm in Teleosts is not definitely understood.A Guide to the Study of Fishes, Volume 1 (of 2)
David Starr Jordan
It consists of three layers: ectoderm, endoderm, and mesoderm.The Sea-beach at Ebb-tide
Augusta Foote Arnold
It has been already stated that the mesoderm is a composite tissue.
The origin and part played by the mesoderm appeared the most obscure.
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
Word Origin and History for mesoderm
Online Etymology Dictionary, © 2010 Douglas Harper
- 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.
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 Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.