[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 mesodermal
The mesodermal elements thus added to the enteric entodermal tube consist of connective tissue and muscular fibers.The Anatomy of the Human Peritoneum and Abdominal Cavity
George. S. Huntington
The paired oviducts and vasa deferentia are, as we have seen, mesodermal in origin.
Word Origin and History for mesodermal
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.