mesomere

[ mez-uh-meer, mes-, mee-zuh-, -suh- ]
/ ˈmɛz əˌmɪər, ˈmɛs-, ˈmi zə-, -sə- /

noun Embryology.

a blastomere of intermediate size between a micromere and a macromere.
the intermediate zone of the mesoderm.

Origin of mesomere

First recorded in 1900–05; meso- + -mere
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Medical definitions for mesomere

mesomere
[ mĕzə-mîr′ ]

n.

A blastomere of intermediate size that is larger than a micromere but smaller than a macromere.
The middle zone of the mesoderm of a chordate embryo, from which excretory tissue develops.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.