one of the large blastomeres that form toward the vegetal pole in embryos undergoing unequal cleavage.
Origin of macromere
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
embryol any of the large yolk-filled cells formed by unequal cleavage of a fertilized ovum
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
A large blastomere.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.