[mez-uh-meer, mes-, mee-zuh-, -suh-]
noun Embryology.
a blastomere of intermediate size between a micromere and a macromere.
the intermediate zone of the mesoderm.

1900–05; meso- + -mere Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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American Heritage
Medical Dictionary

mesomere mes·o·mere (měz'ə-mēr', měs'-)

  1. A blastomere of intermediate size, that is larger than a micromere but smaller than a macromere.

  2. 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.
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